{"id":114442,"date":"2022-02-07T01:00:42","date_gmt":"2022-02-07T00:00:42","guid":{"rendered":"https:\/\/material-properties.org\/strontium-et-iode-comparaison-proprietes\/"},"modified":"2022-03-23T07:24:44","modified_gmt":"2022-03-23T06:24:44","slug":"strontium-et-iode-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/strontium-et-iode-comparaison-proprietes\/","title":{"rendered":"Strontium et Iode – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques du strontium 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.\u00a0Strontium vs Iode.<\/em><\/p>\n

\"strontium<\/p>\n

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

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

\"Iode<\/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

Strontium et iode – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

Strontium<\/h3>\n

Le strontium est un m\u00e9tal alcalino-terreux, le strontium est un \u00e9l\u00e9ment m\u00e9tallique jaun\u00e2tre blanc argent\u00e9 doux qui est chimiquement tr\u00e8s r\u00e9actif.
\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

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

\n

\"Iode<\/p>\n

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

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

<\/div>\n
\n

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

Strontium<\/a><\/h3>\n

Consommant 75% de la production, le strontium \u00e9tait principalement utilis\u00e9 dans le verre des tubes cathodiques de t\u00e9l\u00e9vision couleur.\u00a0Le strontium est surtout connu pour les rouges brillants que ses sels donnent aux feux d’artifice et aux fus\u00e9es \u00e9clairantes.\u00a0Il est \u00e9galement utilis\u00e9 dans la production d’aimants en ferrite et dans le raffinage du zinc.\u00a0Les peintures et plastiques modernes \u00ab phosphorescents \u00bb contiennent de l’aluminate de strontium.\u00a0Ils absorbent la lumi\u00e8re pendant la journ\u00e9e et la lib\u00e8rent lentement pendant des heures apr\u00e8s.\u00a0L’isotope Sr90 a une demi-vie de 28 ans et est l’un des \u00e9metteurs b\u00eata de haute \u00e9nergie bien connus.\u00a0Par cons\u00e9quent, il est utilis\u00e9 dans les syst\u00e8mes pour dispositifs d’alimentation auxiliaire nucl\u00e9aire (SNAP), qui trouvent des applications potentielles dans les stations m\u00e9t\u00e9orologiques \u00e9loign\u00e9es, les v\u00e9hicules spatiaux, les bou\u00e9es de navigation, etc.<\/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

Strontium 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>\nStrontium<\/b><\/td>\nIode<\/b><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n2,63 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>\n15,7 GPa<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\n1,8<\/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>\n777\u00b0C<\/strong><\/td>\n113,5\u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n1382\u00b0C<\/strong><\/td>\n184\u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n35,3 W\/mK<\/strong><\/td>\n0,449 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n22,5 \u00b5m\/mK<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n0,3 J\/g\u00b7K<\/span><\/strong><\/td>\n0,214 J\/g\u00b7K<\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n8,3 kJ\/mole<\/strong><\/td>\n7,824 kJ\/mol<\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n144 kJ\/mole<\/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 strontium 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.\u00a0Strontium 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":"\nStrontium 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 strontium 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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