{"id":115489,"date":"2022-04-25T05:04:56","date_gmt":"2022-04-25T04:04:56","guid":{"rendered":"https:\/\/material-properties.org\/helium-et-xenon-comparaison-proprietes\/"},"modified":"2022-04-26T06:59:15","modified_gmt":"2022-04-26T05:59:15","slug":"helium-et-xenon-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/helium-et-xenon-comparaison-proprietes\/","title":{"rendered":"H\u00e9lium et X\u00e9non – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l’h\u00e9lium et du x\u00e9non, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0H\u00e9lium vs X\u00e9non.<\/em><\/p>\n

\"h\u00e9lium<\/p>\n

\n
<\/span>Comparer l'h\u00e9lium avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

\"Hydrog\u00e8ne<\/a><\/p>\n

\"Oxyg\u00e8ne<\/a><\/p>\n

\"Argon<\/a><\/p>\n

\"Aluminium<\/a><\/p>\n

\"N\u00e9on<\/a><\/p>\n

\"X\u00e9non<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

\n
<\/span>Comparer le x\u00e9non avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

\"H\u00e9lium<\/a><\/p>\n

\"N\u00e9on<\/a><\/p>\n

\"Krypton<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

<\/div>\n
\n

H\u00e9lium et X\u00e9non – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

H\u00e9lium<\/h3>\n

C’est un gaz monoatomique incolore, inodore, insipide, non toxique, inerte, le premier du groupe des gaz rares dans le tableau p\u00e9riodique.\u00a0Son point d’\u00e9bullition est le plus bas de tous les \u00e9l\u00e9ments.
\n<\/p><\/div>

<\/div><\/div>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

X\u00e9non<\/h3>\n

Le x\u00e9non est un gaz noble incolore, dense et inodore pr\u00e9sent dans l’atmosph\u00e8re terrestre \u00e0 l’\u00e9tat de traces.[10] Bien que g\u00e9n\u00e9ralement non r\u00e9actif, le x\u00e9non peut subir quelques r\u00e9actions chimiques. Le x\u00e9non a \u00e9t\u00e9 d\u00e9couvert pour la premi\u00e8re fois en 1898 par le chimiste \u00e9cossais William Ramsay et le chimiste anglais Morris Travers. Le nom x\u00e9non de ce gaz vient du mot grec \u03be\u03ad\u03bd\u03bf\u03bd [x\u00e9non], forme neutre singuli\u00e8re de \u03be\u03ad\u03bd\u03bf\u03c2 [xenos], signifiant \u00ab\u00e9tranger(er)\u00bb, \u00ab\u00e9tranger(r)\u00bb ou \u00abinvit\u00e9\u00bb. Dans l’industrie nucl\u00e9aire, en particulier le x\u00e9non artificiel 135 a un impact \u00e9norme sur le fonctionnement d’un r\u00e9acteur nucl\u00e9aire. Pour les physiciens et les op\u00e9rateurs de r\u00e9acteurs, il est important de comprendre les m\u00e9canismes qui produisent et \u00e9liminent le x\u00e9non du r\u00e9acteur pour pr\u00e9dire comment le r\u00e9acteur r\u00e9agira suite \u00e0 des changements de niveau de puissance.
\n<\/p><\/div>

<\/div><\/div>\n<\/div><\/div>\n
<\/div>\n
\n

\"H\u00e9lium<\/p>\n<\/div><\/div>\n

\n

\"X\u00e9non<\/p>\n

<\/p><\/div><\/div>\n

Source\u00a0: www.luciteria.com<\/p>\n

<\/div>\n
\n

H\u00e9lium et X\u00e9non – Applications<\/h2>\n<\/div><\/div>\n
\n
\n
\n

H\u00e9lium<\/a><\/h3>\n

L’h\u00e9lium est utilis\u00e9 \u00e0 de nombreuses fins qui n\u00e9cessitent certaines de ses propri\u00e9t\u00e9s uniques, telles que son bas point d’\u00e9bullition, sa faible densit\u00e9, sa faible solubilit\u00e9, sa conductivit\u00e9 thermique \u00e9lev\u00e9e ou son inertie.\u00a0Sur la production mondiale totale d’h\u00e9lium en 2014 d’environ 32 millions de kg (180 millions de m\u00e8tres cubes standard) d’h\u00e9lium par an, la plus grande utilisation (environ 32 % du total en 2014) concerne les applications cryog\u00e9niques, dont la plupart impliquent le refroidissement des aimants supraconducteurs dans scanners IRM m\u00e9dicaux et spectrom\u00e8tres RMN.\u00a0La plupart des aimants cliniques sont des aimants supraconducteurs, qui n\u00e9cessitent de l’h\u00e9lium liquide pour les maintenir tr\u00e8s froids.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n
\n
\n

X\u00e9non<\/a><\/h3>\n

Le x\u00e9non est utile dans les applications suivantes.\u00a0Le flash de lumi\u00e8re blanche produit par le x\u00e9non le rend appropri\u00e9 pour une utilisation dans les lumi\u00e8res stroboscopiques et pour alimenter les lasers \u00e0 rubis.\u00a0Le x\u00e9non est utilis\u00e9 dans les dispositifs \u00e9mettant de la lumi\u00e8re appel\u00e9s lampes flash au x\u00e9non, utilis\u00e9s dans les flashs photographiques et les lampes stroboscopiques.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

H\u00e9lium et x\u00e9non – Comparaison dans le tableau<\/h2>\n<\/div><\/div>H\u00e9lium<\/p>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00c9l\u00e9ment<\/td>\nH\u00e9lium<\/strong><\/td>\nX\u00e9non<\/strong><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n0,00018 g\/cm3<\/strong><\/td>\n0,0059 g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Module de Young<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n-272,2 \u00b0C<\/strong><\/td>\n-111,8 \u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n-268,9 \u00b0C<\/strong><\/td>\n-107,1 \u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n0,1513 W\/mK<\/strong><\/td>\n0,00565 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n5,193 J\/g\u00b7K<\/span><\/strong><\/td>\n0,158 J\/g\u00b7K<\/span><\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n0,0138 kJ\/mol<\/span><\/strong><\/td>\n2,297 kJ\/mol<\/span><\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n0,0845 kJ\/mol<\/span><\/strong><\/td>\n12,636 kJ\/mol<\/span><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l’h\u00e9lium et du x\u00e9non, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0H\u00e9lium vs X\u00e9non. Source\u00a0: www.luciteria.com H\u00e9lium<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"yoast_head":"\nH\u00e9lium et X\u00e9non - Comparaison - Propri\u00e9t\u00e9s - Material Properties<\/title>\n<meta name=\"description\" content=\"Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l'h\u00e9lium et du x\u00e9non, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. 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