{"id":114445,"date":"2022-02-07T02:06:45","date_gmt":"2022-02-07T01:06:45","guid":{"rendered":"https:\/\/material-properties.org\/rubidium-et-iode-comparaison-proprietes\/"},"modified":"2022-03-23T07:30:57","modified_gmt":"2022-03-23T06:30:57","slug":"rubidium-et-iode-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/rubidium-et-iode-comparaison-proprietes\/","title":{"rendered":"Rubidium et Iode – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du rubidium et de l’iode, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Rubidium vs Iode.<\/em><\/p>\n

\"rubidium<\/p>\n

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

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

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

\"C\u00e9sium<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

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

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

\"S\u00e9l\u00e9nium<\/a><\/p>\n

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

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

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

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

\"C\u00e9sium<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

<\/div>\n
\n

Rubidium et Iode – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

Rubidium<\/h3>\n

Le rubidium est un \u00e9l\u00e9ment m\u00e9tallique doux et blanc argent\u00e9 du groupe des m\u00e9taux alcalins, avec une masse atomique de 85,4678.\u00a0Le rubidium \u00e9l\u00e9mentaire est hautement r\u00e9actif, avec des propri\u00e9t\u00e9s similaires \u00e0 celles des autres m\u00e9taux alcalins, y compris une oxydation rapide dans l’air.
\n<\/p><\/div>

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

Iode<\/h3>\n

L’iode est le plus lourd des halog\u00e8nes stables, il existe sous la forme d’un solide m\u00e9tallique brillant, violet-noir dans des conditions standard qui se sublime facilement pour former un gaz violet.\u00a0L’iode est le moins abondant des halog\u00e8nes stables, \u00e9tant le soixante et uni\u00e8me \u00e9l\u00e9ment le plus abondant.\u00a0Elle est encore moins abondante que les terres dites rares.\u00a0C’est le nutriment min\u00e9ral essentiel le plus lourd.<\/p>\n<\/div>

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

\"Rubidium<\/p>\n<\/div><\/div>\n

\n

\"Iode<\/p>\n

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

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

<\/div>\n
\n

Rubidium et Iode – Applications<\/h2>\n<\/div><\/div>\n
\n
\n
\n

Rubidium<\/a><\/h3>\n

La propri\u00e9t\u00e9 photo\u00e9missive du rubidium, qui est celle d’une surface \u00e9mettant des \u00e9lectrons libres lorsqu’elle est touch\u00e9e par un rayonnement \u00e9lectromagn\u00e9tique, permet les applications suivantes.\u00a0Une surface photo\u00e9missive rubidium-tellure est utilis\u00e9e dans les cellules photo\u00e9lectriques, qui sont incorpor\u00e9es dans une vari\u00e9t\u00e9 de dispositifs \u00e9lectroniques de d\u00e9tection et d’activation.\u00a0Il est sensible \u00e0 un large spectre de rayonnement allant de l’ultraviolet moyen au visible jusqu’au proche infrarouge.\u00a0Un rev\u00eatement rubidium-c\u00e9sium-antimoine est couramment appliqu\u00e9 sur les photocathodes des tubes photomultiplicateurs.\u00a0Le rubidium-82 est utilis\u00e9 pour la tomographie par \u00e9mission de positrons.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n
\n
\n

Iode<\/a><\/h3>\n

En plus des produits nutritionnels, l’iode et les d\u00e9riv\u00e9s d’iode sont utilis\u00e9s dans un large \u00e9ventail d’applications m\u00e9dicales, agricoles et industrielles.\u00a0Environ la moiti\u00e9 de tout l’iode produit entre dans divers compos\u00e9s organoiod\u00e9s, 15% restants restent sous forme d’\u00e9l\u00e9ment pur, 15% suppl\u00e9mentaires sont utilis\u00e9s pour former de l’iodure de potassium et 15% suppl\u00e9mentaires pour d’autres compos\u00e9s iod\u00e9s inorganiques.\u00a0L’application principale est la production de produits de contraste pour rayons X (22 %).\u00a0Le num\u00e9ro atomique et la densit\u00e9 \u00e9lev\u00e9s de l’iode le rendent parfaitement adapt\u00e9 \u00e0 cette application, car sa pr\u00e9sence dans le corps peut aider \u00e0 augmenter le contraste entre les tissus, les organes et les vaisseaux sanguins avec des densit\u00e9s de rayons X similaires.\u00a0Il est utilis\u00e9 comme antiseptique pour les plaies externes.\u00a0Une autre application \u00e0 l’origine de la demande d’iode est le film polarisant dans les \u00e9crans \u00e0 cristaux liquides (LCD).<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

Rubidium et Iode – Comparaison dans le tableau<\/h2>\n<\/div><\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00c9l\u00e9ment<\/td>\nRubidium<\/b><\/td>\nIode<\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n1,532 g\/cm3<\/strong><\/td>\n4,94 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>\n2,4 GPa<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\n0,3<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\n0,216 MPa<\/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>\n39.31\u00b0C<\/strong><\/td>\n113,5\u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n688\u00b0C<\/strong><\/td>\n184\u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n58,2 W\/mK<\/strong><\/td>\n0,449 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n90 \u00b5m\/mK<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n0,363 J\/g\u00b7K<\/span><\/strong><\/td>\n0,214 J\/g\u00b7K<\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n2,192 kJ\/mole<\/strong><\/td>\n7,824 kJ\/mol<\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n72,216 kJ\/mol<\/span><\/strong><\/td>\n20,752 kJ\/mole<\/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 du rubidium et de l’iode, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique.\u00a0Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments.\u00a0Rubidium vs Iode. Source : www.luciteria.com<\/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":"\nRubidium et Iode - 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 du rubidium et de l'iode, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. 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