h2s vs h2se boiling point

in the final review session, lyndon said that h2se has a greater boiling point (and therefore stronger bonds) because it has greater london dispersion forces than h2s does. We don't collect information from our users. It is used in the manufacture of chemicals, in metallurgy, and as an analytical reagent. what is the. Hydrogen selenide is hazardous, being the most toxic selenium compound[3] and far more toxic than its congener hydrogen sulfide. This is an account of intermolecular hydrogen bonding which is present in the molecules of H2O but is absent in the molecules of H2S. Is this a good move to take both? Which one hydrogen sulphide H2S or hydrogen selenide H2Se would be expected to have the higher boiling point? Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Because of this, comparatively weak intermolecular forces exist for H2S and the melting and boiling points are much lower than they are in water. H2Se adopts a bent structure with a HSeH bond angle of 91[citation needed]. Hydrogen sulfide is used in the manufacture of chemicals, in metallurgy, and as an analytical reagent. Hydrogen sulfide/Boiling point. Illustrative is the synthesis of selenoureas from cyanamides:[11]. What are the disadvantages of shielding a thermometer? The cookie is used to store the user consent for the cookies in the category "Other. Among H2O, H2S, H2 Se and H2 Te the one with highest boiling point. This cookie is set by GDPR Cookie Consent plugin. Therefore, 1-chloropentane has the highest boiling point. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Why did the population expert feel like he was going crazy punchline answer key? Molecules with hydrogen bonds will always have higher boiling points than similarly sized molecules which dont have an an -O-H or an -N-H group. This is because of the lower electronegativity of sulphur than oxygen. > H2S < H2Se < H2Te < H2O Thi O This is the correct boiling point order. The selenide, in contrast, forms Why does H2S have a lower boiling point than water? We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. I'm not sure if the higher electronegativity of S would make the dipole-dipole interaction stronger. In binary acids such as H2S and H2Se, the H-Se bonds is longer than the H-S bonds as Se is larger than S. of H 2O is much higher than that of H 2S. It does not store any personal data. Due to extensive intermolecular H-bonding in H 2O, the b.p. , Using Standard Molar Entropies), Gibbs Free Energy Concepts and Calculations, Environment, Fossil Fuels, Alternative Fuels, Biological Examples (*DNA Structural Transitions, etc. [6], The properties of H2S and H2Se are similar, although the selenide is more acidic with pKa = 3.89 and the second pKa = 11,[6] or 15.05 0.02 at 25C. We also use third-party cookies that help us analyze and understand how you use this website. 0 C; 15 C; . It does not store any personal data. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Water is more polar than hydrogen sulfide because the oxygen atom is more electronegative than the sulfur atom. H2Te because of higher molecular weight. Sulfur is not from these elements, therefore the dipole-dipole force between 2H2S is not a hydrogen bond. However, I feel like I'm missing something. Among H2O, H2, H2Se and H2 Te, the one with highest boiling point is a)H2O because of hydrogen bond. only weak hydrogen bonds; therefore, its average "effective" Since S, Se, Te are in the same group of the periodic table - so they have the same type of forces/bonding. At the critical point there is no change of state when pressure is increased or if heat is added. If true enter 1 else 0. Press ESC to cancel. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. This is a result of the significant hydrogen bonding present in the water molecule. 2 Does H2O or H2Se have a higher boiling point? [8][12], Despite being highly toxic, no human fatalities have yet been reported. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. In the 19th . Necessary cookies are absolutely essential for the website to function properly. 5 Why does H2S has lower boiling point than H2Se? So I initially thought, since S has a higher electronegativity than Se, H2S would have the higher boiling point. And hence, greater will be the boiling point of that liquid. 212F (100C) This cookie is set by GDPR Cookie Consent plugin. Forget about the intramolecular forces so much. How do you win an academic integrity case? H2Se has the higher boiling point because it has a larger mass and more electrons. If you repeat this exercise with the compounds of the elements in groups 15, 16, and 17 with hydrogen, something odd happens. They both have dipole-dipole which I think are the same strength. This website uses cookies to improve your experience while you navigate through the website. Hello! Discuss the forces present in H2S and H2Se. We also use third-party cookies that help us analyze and understand how you use this website. These cookies track visitors across websites and collect information to provide customized ads. What bank can you exchange foreign money? Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Elemental selenium can be recovered from H2Se through a reaction with aqueous sulfur dioxide (SO2). Which is the most effective way to prevent viral foodborne illnesses? H2S is more polar than H2Se because H2S has greater dipole-dipole forces than H2Se since the H-S bond is more polar than the H-Se bond. It is suspected that this is due to the gas' tendency to oxidise to form red selenium in mucous membranes; elemental selenium is less toxic than selenides are. When compared to H2S H2O has a higher boiling point because H2O contains stronger? Safe with 3, or risk 4? The increase in boiling point happens because the molecules are getting larger with more electrons, and so van der Waals dispersion forces become greater. Q. Amongst H2O,H2S,H2Se and H2Te, the 1one with the highest boiling point is. Boiling pointH2S : 60 C (76 F; 213 K)H2Se : 41.25 C (42.25 F; 231.90 K), which is 18.75 C higher (values from wikipedia - date: 09-09-2014) What is the compound name for H2Se? The boiling point of hydrogen compounds of group 16 is into the order of H2O > H2S . This is because of the lower electronegativity of sulphur than oxygen. What is the meaning of functional region? The hydrogen bonding makes the molecules stickier, such that more heat (energy) is required to separate them. Why H2S has lower boiling point than H2O? ) From the following pairs of compounds, determine which one has the highest boiling point. Analytical cookies are used to understand how visitors interact with the website. According to the Sonoda method, H2Se is generated from the reaction of H2O and CO on Se in the presence of Et3N. [5] Exposure at high concentrations, even for less than a minute, causes the gas to attack the eyes and mucous membranes; this causes cold-like symptoms for at least a few days afterwards. Thus, H2S has a higher boiling point than HCl. Fher, F. In "Handbook of Preparative Inorganic Chemistry"; Brauer, E., Ed. Amongst H2O, H2S, H2Se and H2Te, the one with the highest boiling point is (a) H2O because of hydrogen bonding. It is the most toxic selenium compound with an exposure limit of 0.05 ppm over an 8-hour period. It does not store any personal data. But opting out of some of these cookies may affect your browsing experience. Hydrogen sulfide, H2S, is a highly toxic and flammable, colorless gas with a characteristic odor of rotten eggs. Its decomposition is used to prepare the highly pure element. Please helo me pick my A-levels. By clicking Accept All, you consent to the use of ALL the cookies. Which of the following has highest boiling point H2O H2S H2Se? Knowing that hydrogen bonds are stronger than dipole-dipole forces, this leads to : water has a higher boiling point than hydrogen sulfide because hydrogen bonds are much stronger than dipole-dipole bonds. Begin typing your search term above and press enter to search. It adds across alkenes. Chemistry. Boiling point of H2S is about -76 deg. The intermolecular attractions between water molecules are stronger than H2S molecules due to hydrogen bonding in H2O due to high electronegativity and small size of oxygen atom. Which has a higher boiling point H2O or H2S? H2O < H2S < H2Se < H2Te Therefore, the boiling point of H2O is expected to be the lowest. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Hydrogen selenide/Boiling point. Hydrogen sulfide is a colorless gas with an offensive stench and is said to smell like rotten eggs. Analytical cookies are used to understand how visitors interact with the website. The correct boiling point order is: A H 2S<H 2Se<H 2Te<H 2O B H 2O<H 2Se<H 2S<H 2Te C H 2Te<H 2Se<H 2S<H 2O D H 2O<H 2S<H 2Se<H 2Te Medium Solution Verified by Toppr Correct option is A) True (1) You must log in or register to reply here. Which has a higher boiling point between H2O or H2Se? In binary acids such as H2S and H2Se, the HSe bonds is longer than the HS bonds as Se is larger than S. The HSe bond is therefore weaker than the HS bond and H2Se is thus a stronger acid than H2S. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Why water has higher melting and boiling point as compared to H2S? Which of the following has lowest boiling point H2O H2S H2Se? Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! So despite its small molecular weight, water has an incredibly . This essentially means H2Se is a bigger molecule than H2S meaning the Van Der Waal forces (London forces) on H2Se is stronger than on H2S which means it takes more energy to break the intermolecular forces for H2Se than H2S- this leads to H2S having the lower boiling point. Among H2S, H2Se, H2Te the strongest acid is H2Te. Thus, the boiling point of H2S is lower than that of H2O. In the laboratory, H2Se is usually prepared by the action of water on Al2Se3, concomitant with formation of hydrated alumina. Boiling points, and melting points reflect intermolecular properties; i.e. In the final review session, Lyndon said that H2Se has a greater boiling point (and therefore stronger bonds) because it has greater London dispersion forces than H2S does. Liquids have much higher densities in comparison to gases. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Sonoda, N.; Kondo K.; Nagano, K.; Kambe, N.; Morimoto, F. Angewandte Chemie International Edition English 1980, vol. Hydrogen selenide/Boiling point. Properties & Structures of Inorganic & Organic Acids, Register Alias and Password (Only available to students enrolled in Dr. Lavelles classes. Water has strong hydrogen bonds between molecules. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. SOAS Paul Robeson House - what's it like? The chemistry of H2S has been studied since the 1600s. The. This website uses cookies to improve your experience while you navigate through the website. Does h2s or h2se have a higher boiling point? In binary acids such as H2S and H2Se, the HSe bonds is longer than the HS bonds as Se is larger than S. The HSe bond is therefore weaker than the HS bond and H2Se is thus a stronger acid than H2S. If true enter 1 else 0. The threshold limit value is 0.05 ppm. This cookie is set by GDPR Cookie Consent plugin. molecules rather than only one. 4 When compared to H2S H2O has a higher boiling point because H2O contains stronger? And as chemists, as physical scientists, we should interrogate actual data, and list the normal boiling points, so that we know that we are barking up the right tree. 9 Which is the correct order for boiling point? H2Se is a colorless, flammable gas under standard conditions. Water has a higher boiling point than hydrogen sulphide. The cookies is used to store the user consent for the cookies in the category "Necessary". 10 What is the melting point of hydrogen sulfide? These cookies track visitors across websites and collect information to provide customized ads. It is used in the manufacture of chemicals, in metallurgy, and as an analytical reagent. In water, the hydrogens are bound to oxygen, a strongly electronegative element. Is H2Te stronger than H2Se? One more up and you find that H 2 S (hydrogen sulfide) has a boiling point at -62C. Liquids have an indefinite shape and assume the shape of their container. H2S has the lowest boiling point. Amongst `H_2 O, H_2 S, H_2 Se` and `H_2 Te`, the one with the highest boiling point is: `H_2 O` because of hydrogen bonding, `H_2 Te` because of higher molecular weight, `H_2 S` because of hydrogen bonding, `H_2 Se` because of lower molecular weight. Currently failing My Retake Year and I need to turn it around, AQA Politics Paper 1 25 May 2022 Exam chat, OCR Classical Civilisation A2 World of the Hero Paper 2022, Edexcel A Level History Paper 1 (options 1A1H) 9HI0 - 26 May 2022 [Exam Chat]. Postby Madison Gil 3D Sat Dec 08, 2018 5:09 pm, Postby Austin Clack Sat Dec 08, 2018 6:28 pm, Postby Rami_Z_AbuQubo_2K Sun Dec 09, 2018 5:13 pm, Postby Anjali_Kumar1F Sun Dec 09, 2018 5:41 pm, Postby 604656370 Mon Dec 10, 2018 12:35 am, Return to Properties & Structures of Inorganic & Organic Acids, Users browsing this forum: No registered users and 0 guests. Where was the Dayton peace agreement signed? 9 Which has a higher boiling point H2O or H2S? However, in the chemistry textbook version 6 p.484, H2Se is expected to be a stronger acid than H2S because H2Se has weaker bonds. Why does sulfur have a higher boiling point than water? Explain why H2Se has a higher boiling point than H2S. By clicking Accept All, you consent to the use of ALL the cookies. Hydrogen sulfide, H2S, is ahighly toxic and flammable, colorless gas with a characteristic odor of rotten eggs. F. The (unusually) high boiling point of H2O is explained by extensive hydrogen bonding in water. 1 Why is H2Se have a higher boiling point than H2S? So, less energy is required to break the hydrogen bonds in H2S. H2Te has the highest molecular weight and thus it has the highest boiling point from H2S and H2Se. The cookie is used to store the user consent for the cookies in the category "Analytics". Why is London Disperse Force in every bond? In binary acids such as H2S and H2Se, the HSe bonds is longer than the HS bonds as Se is larger than S. The HSe bond is therefore weaker than the HS bond and H2Se is thus a stronger acid than H2S. In India on the occasion of marriages the fireworks class 12 chemistry JEE_Main, The alkaline earth metals Ba Sr Ca and Mg may be arranged class 12 chemistry JEE_Main, Which of the following has the highest electrode potential class 12 chemistry JEE_Main, Which of the following is a true peroxide A rmSrmOrm2 class 12 chemistry JEE_Main, Which element possesses the biggest atomic radii A class 11 chemistry JEE_Main, Phosphine is obtained from the following ore A Calcium class 12 chemistry JEE_Main, Differentiate between the Western and the Eastern class 9 social science CBSE, NEET Repeater 2023 - Aakrosh 1 Year Course, CBSE Previous Year Question Paper for Class 10, CBSE Previous Year Question Paper for Class 12. H2Te has the highest molecular weight and thus it has the highest boiling point from H2S and H2Se. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. This in turn will increase the energy needed to pull the molecules apart, thus an increase in the boiling point . 15%, H2Sebecause of lower molecular weight. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Thus, there will always be some degree of induced dipole-induced dipole (also known as LDF). Water molecules experience hydrogen bonds whereas hydrogen sulfide (H2S) molecules experience dipole forces. Therefore, despite the fact that HCl molecules can form stronger hydrogen bonds between themselves, the intermolecular attractions between H2S molecules still prevail as they are twice as numerous. [4][5] Even at extremely low concentrations, this compound has a very irritating smell resembling that of decayed horseradish or 'leaking gas', but smells of rotten eggs at higher concentrations. [7], Industrially, it is produced by treating elemental selenium at T>300C with hydrogen gas. 7 Which of the following has lowest boiling point H2O H2S H2Se? These applications will - due to browser restrictions - send data between your browser and our server. When looking at what has a higher boiling point, we look at what has the strongest intermolecular forces. 19, page 308, National Institute for Occupational Safety and Health, http://www.epa.gov/ttnatw01/hlthef/selenium.html, "CDC - Immediately Dangerous to Life or Health Concentrations (IDLH): Hydrogen selenide (as Se) - NIOSH Publications and Products", https://www.cdc.gov/niosh/docs/81-123/pdfs/0336.pdf, https://www.osha.gov/dts/chemicalsampling/data/CH_246700.html, WebElements page on compound's properties, CDC - NIOSH Pocket Guide to Chemical Hazards, https://en.wikipedia.org/w/index.php?title=Hydrogen_selenide&oldid=1133328984, This page was last edited on 13 January 2023, at 07:04. Does having more london dispersion forces make a molecule stronger, or more likely to ionize? Clearly, the dominant intermolecular force is hydrogen bonding, which is expressed most strongly in "water". H2S molecules are involved in weaker hydrogen bonding than H2O molecules. Copyright 2023 Quick-Advices | All rights reserved. But opting out of some of these cookies may affect your browsing experience. vaporized on boiling consisting on average of several water h2s vs h2se boiling point H2O, 100oC; H2S, -60oC; H2Se, -41oC; H2Te, -2oC (2 marks) Generally, the boiling points in a series increases with the molecular mass and this would put the boiling point of water below -60o C. The boiling point of water is high because of the extensive H-bond between the water molecules. asked Apr 21, 2019 in Chemistry by Simrank (72.5k points) p - block element . Why boiling point of H2O is higher than H2S and H2Se? On the other hand, H2Se and H2Te contain hydrogens that are not attached to electronegative elements, so they cannot undergo hydrogen bonding, and they possess boiling points that are significantly lower than water. This hydrogen chalcogenide is the simplest and most commonly encountered hydride of selenium. [10] H2Se can be purchased in cylinders. This cookie is set by GDPR Cookie Consent plugin. More the boiling point, less the volatility. You also have the option to opt-out of these cookies. The bigger the atom, the greater the shift in electrons to create a temporary dipole and makes H2Se a stronger acid. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. However, you may visit "Cookie Settings" to provide a controlled consent. The cookie is used to store the user consent for the cookies in the category "Performance". The gas can be detected at a level of 2 parts per billion. The cookie is used to store the user consent for the cookies in the category "Analytics". ), Administrative Questions and Class Announcements, *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation), *Biological Importance of Buffer Solutions, Equilibrium Constants & Calculating Concentrations, Non-Equilibrium Conditions & The Reaction Quotient, Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions, Reaction Enthalpies (e.g., Using Hesss Law, Bond Enthalpies, Standard Enthalpies of Formation), Heat Capacities, Calorimeters & Calorimetry Calculations, Thermodynamic Systems (Open, Closed, Isolated), Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric), Concepts & Calculations Using First Law of Thermodynamics, Concepts & Calculations Using Second Law of Thermodynamics, Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy, Entropy Changes Due to Changes in Volume and Temperature, Calculating Standard Reaction Entropies (e.g. As for these conflicting explanations, stronger bonds make boiling point greater and conversely, pH higher (less acidic). Since electrons are constantly moving, at any given time, one atom will be more electronegative than the other atom. 3 Does H2S have the highest boiling point? What are some examples of how providers can receive incentives? The strength of LDFs depends on polarizability. And which explanation would be correct? ), *Thermodynamics and Kinetics of Organic Reactions, *Free Energy of Activation vs Activation Energy, *Names and Structures of Organic Molecules, *Constitutional and Geometric Isomers (cis, Z and trans, E), *Identifying Primary, Secondary, Tertiary, Quaternary Carbons, Hydrogens, Nitrogens, *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections), *Cyclohexanes (Chair, Boat, Geometric Isomers), Stereochemistry in Organic Compounds (Chirality, Stereoisomers, R/S, d/l, Fischer Projections). Thus, the boiling point of H2S is lower than that of H2O. If true enter 1 else 0. By clicking Accept All, you consent to the use of ALL the cookies. Water has a higher boiling point than hydrogen sulphide. But opting out of some of these cookies may affect your browsing experience. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. H 2 S < H 2 S e < H 2 T e Therefore, the correct order of boiling point is: H 2 S < H 2 S e < H 2 T e < H 2 O Hence, the correct option is (A) 1. 5 Why does H2Se have a higher boiling point than H2S? [8] A number of routes to H2Se have been reported, which are suitable for both large and small scale preparations. As the molar mass increases boiling point of the hydrides increases except H2O. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". AddThis use cookies for handling links to social media. -42.25F (-41.25C) The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". (a) CH3CH2OH and CH3CH2CH2CH2CH2CH2CH3 (b) CH3CH2CH2CH2CH2CH2CH3 and . Hydrogen selenide/Melting point. , Using Standard Molar Entropies), Gibbs Free Energy Concepts and Calculations, Environment, Fossil Fuels, Alternative Fuels, Biological Examples (*DNA Structural Transitions, etc. Postby Keerthana Sundar 1K Fri Dec 11, 2020 2:45 pm, Postby Steph Du 1H Fri Dec 11, 2020 2:58 pm, Return to Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding), Users browsing this forum: No registered users and 0 guests. Explain your reasoning a) H2S vs H2Se b) CH3Cl vs CH3F c) CO2 vs NO2 d) H2S vs H2O e) HF vs HCl f) NH3 vs BF3; Question:) From the following pairs of compounds, determine which one has the highest boiling point. 212F (100C) Who wrote the music and lyrics for Kinky Boots? The phase diagram of hydrogen sulfide is shown below the table. It is the most toxic selenium compound[3] with an exposure limit of 0.05 ppm over an 8-hour period. These cookies will be stored in your browser only with your consent. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Why does water have a higher boiling point than H2Se? Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. 2%. Hydrogen selenide/Boiling point. A-level Study and Revision Groups 2022-2023, The Current Year 12 Chat Thread (2022-2023). Solve any question of Hydrogen with:-. -76F (-60C) These cookies will be stored in your browser only with your consent. Which of the following has highest boiling point H2Se? For full table with Imperial Units - rotate the screen! -42.25F (-41.25C) asked Mar 12, 2019 in Chemistry by Daisha (70.9k points) s-block . Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding), Register Alias and Password (Only available to students enrolled in Dr. Lavelles classes. 1 Which has the highest boiling point H2O H2S or H2Se? Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. When I was much younger, I worked in an inorganic lab whose specialty was inorganic sulfides and selenides. Why does H2Se have a higher boiling point than H2S? H2O molecules can pack together more closely. Barts and the London (QMUL) A100 2023 Entry, Official Oxford 2023 Postgraduate Applicants Thread, Statistics Question - normal distribution, Official Thread: (Undergraduate) Medicine 2023 Entry, Official LSE Postgraduate Applicants 2023 Thread, 236020 - Home Office Various EO roles (900 posts), Official LSE Undergraduate Applicants thread 2023. That means H2O is supposed to have a lower boiling point then H2S, but the opposite can be observed and thus be explained by the formation of strong hydrogen bonds. This cookie is set by GDPR Cookie Consent plugin. Which of the following has highest boiling point H2O H2S? 3. This is because of the lower electronegativity of sulphur than oxygen. Some of our calculators and applications let you save application data to your local computer. Liquids are not easily compressed. So the actual trend here is H2S Did Ronnie Dunn Passed Away, How Did Dean Richards Die, Active Nhl Players By Birth Year, Articles H