{"id":114405,"date":"2022-02-05T05:39:44","date_gmt":"2022-02-05T04:39:44","guid":{"rendered":"https:\/\/material-properties.org\/europium-et-tantale-comparaison-proprietes\/"},"modified":"2022-03-22T13:22:07","modified_gmt":"2022-03-22T12:22:07","slug":"europium-et-tantale-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/europium-et-tantale-comparaison-proprietes\/","title":{"rendered":"Europium et Tantale &#8211; Comparaison &#8211; Propri\u00e9t\u00e9s"},"content":{"rendered":"<p><em>Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l&rsquo;europium et du tantale, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. Europium contre Tantale.<\/em><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-107510 size-full\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/01\/europium-and-tantalum-comparison.png\" alt=\"europium et tantale - comparaison\" width=\"1000\" height=\"900\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/01\/europium-and-tantalum-comparison.png 1000w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/01\/europium-and-tantalum-comparison-300x270.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/01\/europium-and-tantalum-comparison-768x691.png 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"su-spoiler su-spoiler-style-modern-light su-spoiler-icon-plus su-spoiler-closed\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>Comparer l'europium avec un autre \u00e9l\u00e9ment<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<p><a href=\"https:\/\/material-properties.org\/Europium-and-Gadolinium-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Comparer avec Gadolinium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Gadolinium-properties-price-application-production-150x150.png\" alt=\"Gadolinium - Propri\u00e9t\u00e9s - Prix - Applications - Production\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Europium-and-Dysprosium-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Comparer avec Dysprosium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Dysprosium-properties-price-application-production-150x150.png\" alt=\"Dysprosium - Propri\u00e9t\u00e9s - Prix - Applications - Production\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Europium-and-Tantalum-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Comparer avec le tantale\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Tantalum-properties-price-application-production-150x150.png\" alt=\"Tantale - Propri\u00e9t\u00e9s - Prix - Applications - Production\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Europium-and-Ytterbium-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Comparer avec Ytterbium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Ytterbium-properties-price-application-production-150x150.png\" alt=\"Ytterbium - Propri\u00e9t\u00e9s - Prix - Applications - Production\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"su-spoiler su-spoiler-style-modern-light su-spoiler-icon-plus su-spoiler-closed\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>Comparer le tantale avec un autre \u00e9l\u00e9ment<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<p><a href=\"https:\/\/material-properties.org\/Titanium-and-Tantalum-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Comparer avec le titane\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Titanium-properties-price-application-production-150x150.png\" alt=\"Titane - Propri\u00e9t\u00e9s - Prix - Applications - Production\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Niobium-and-Tantalum-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Comparer avec Niobium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Niobium-properties-price-application-production-150x150.png\" alt=\"Niobium - Propri\u00e9t\u00e9s - Prix - Applications - Production\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Europium-and-Tantalum-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Comparer avec Europium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Europium-properties-price-application-production-150x150.png\" alt=\"Europium - Propri\u00e9t\u00e9s - Prix - Applications - Production\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Hafnium-and-Tantalum-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Comparer avec Hafnium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Hafnium-properties-price-application-production-150x150.png\" alt=\"Hafnium - Propri\u00e9t\u00e9s - Prix - Applications - Production\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n<div class=\"su-spacer\" style=\"height:20px\"><\/div>\n<div class=\"su-heading su-heading-style-modern-1-dark su-heading-align-left\" id=\"\" style=\"font-size:13px;margin-bottom:20px\"><div class=\"su-heading-inner\">\n<h2>Europium et Tantale &#8211; \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"sue-icon-text sue-panel-clickable\" data-url=\"https:\/\/material-properties.org\/europium-properties-applications-price-production\/\" data-target=\"self\" style=\"min-height:58px;padding-left:72px;color:#333333\"><div class=\"sue-icon-text-icon\" style=\"color:#5dbcd2;font-size:48px;width:48px;height:48px\"><img src=\"icon : cercle d'informations\" style=\"width:48px\" alt=\"\" \/><\/div><div class=\"sue-icon-text-content sue-content-wrap\" style=\"color:#333333\">\n<h3>Europium<\/h3>\n<p>L&rsquo;europium est un m\u00e9tal argent\u00e9 moyennement dur qui s&rsquo;oxyde facilement dans l&rsquo;air et l&rsquo;eau.\u00a0\u00c9tant un membre typique de la s\u00e9rie des lanthanides, l&rsquo;europium assume g\u00e9n\u00e9ralement l&rsquo;\u00e9tat d&rsquo;oxydation +3.\u00a0L&rsquo;europium est l&rsquo;un des \u00e9l\u00e9ments les moins abondants de l&rsquo;univers.\u00a0Seulement environ 5\u00d710\u22128% de toute la mati\u00e8re dans l&rsquo;univers est de l&rsquo;europium.<\/p>\n<\/div><div style=\"clear:both;height:0\"><\/div><\/div>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"sue-icon-text sue-panel-clickable\" data-url=\"https:\/\/material-properties.org\/tantalum-properties-applications-price-production\/\" data-target=\"self\" style=\"min-height:58px;padding-left:72px;color:#333333\"><div class=\"sue-icon-text-icon\" style=\"color:#5dbcd2;font-size:48px;width:48px;height:48px\"><img src=\"icon : cercle d'informations\" style=\"width:48px\" alt=\"\" \/><\/div><div class=\"sue-icon-text-content sue-content-wrap\" style=\"color:#333333\">\n<h3>Tantale<\/h3>\n<p>Le tantale est un m\u00e9tal de transition rare, dur, bleu-gris et lustr\u00e9 qui est tr\u00e8s r\u00e9sistant \u00e0 la corrosion.<\/p>\n<\/div><div style=\"clear:both;height:0\"><\/div><\/div>\n<\/div><\/div>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-medium wp-image-92324\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Europium-periodic-table-300x214.png\" alt=\"Europium dans le tableau p\u00e9riodique\" width=\"300\" height=\"214\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Europium-periodic-table-300x214.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Europium-periodic-table-768x547.png 768w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Europium-periodic-table.png 994w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-92504 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Tantalum-periodic-table-300x188.png\" alt=\"Tantale dans le tableau p\u00e9riodique\" width=\"300\" height=\"188\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Tantalum-periodic-table-300x188.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Tantalum-periodic-table-768x480.png 768w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Tantalum-periodic-table.png 846w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p style=\"text-align: left;\"><\/p><\/div><\/div>\n<p style=\"text-align: center;\">Source : www.luciteria.com<\/p>\n<div class=\"su-spacer\" style=\"height:20px\"><\/div>\n<div class=\"su-heading su-heading-style-modern-1-dark su-heading-align-left\" id=\"\" style=\"font-size:13px;margin-bottom:20px\"><div class=\"su-heading-inner\">\n<h2>Europium et Tantale &#8211; Applications<\/h2>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"sue-shadow-wrap sue-content-wrap sue-shadow-inline-no\"><div class=\"sue-shadow sue-shadow-style-vertical\">\n<div class=\"sue-panel\" data-url=\"\" data-target=\"self\" style=\"background-color:#ffffff;color:#333333;border-radius:0px;-moz-border-radius:0px;-webkit-border-radius:0px;box-shadow:none;-moz-box-shadow:none;-webkit-box-shadow:none;border:1px solid #cccccc\"><div class=\"sue-panel-content sue-content-wrap\" style=\"padding:15px;text-align:left\">\n<h3><a href=\"https:\/\/material-properties.org\/europium-properties-applications-price-production\/\">Europium<\/a><\/h3>\n<p>L&rsquo;europium est utilis\u00e9 dans l&rsquo;impression des billets en euros.\u00a0Il brille en rouge sous la lumi\u00e8re UV et les contrefa\u00e7ons peuvent \u00eatre d\u00e9tect\u00e9es par l&rsquo;absence de cette lueur rouge.\u00a0C&rsquo;est un dopant dans certains types de verre dans les lasers et autres dispositifs opto\u00e9lectroniques.\u00a0\u00c9tant donn\u00e9 que les isotopes de l&rsquo;europium agissent comme de bons absorbeurs de neutrons, ils sont \u00e9tudi\u00e9s pour \u00eatre utilis\u00e9s dans des applications de contr\u00f4le nucl\u00e9aire, comme dans les absorbeurs consommables.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"sue-shadow-wrap sue-content-wrap sue-shadow-inline-no\"><div class=\"sue-shadow sue-shadow-style-vertical\">\n<div class=\"sue-panel\" data-url=\"\" data-target=\"self\" style=\"background-color:#ffffff;color:#333333;border-radius:0px;-moz-border-radius:0px;-webkit-border-radius:0px;box-shadow:none;-moz-box-shadow:none;-webkit-box-shadow:none;border:1px solid #cccccc\"><div class=\"sue-panel-content sue-content-wrap\" style=\"padding:15px;text-align:left\">\n<h3><a href=\"https:\/\/material-properties.org\/tantalum-properties-applications-price-production\/\">Tantale<\/a><\/h3>\n<p>La consommation de tantale est domin\u00e9e par les condensateurs pour les \u00e9quipements \u00e9lectroniques.\u00a0Les condensateurs sont des composants \u00e9lectriques qui stockent l&rsquo;\u00e9nergie \u00e9lectrostatiquement dans un champ \u00e9lectrique et sont utilis\u00e9s dans une grande vari\u00e9t\u00e9 de produits \u00e9lectriques et \u00e9lectroniques.\u00a0Les principales utilisations finales des condensateurs au tantale comprennent les t\u00e9l\u00e9phones portables, les t\u00e9l\u00e9avertisseurs, les ordinateurs personnels et l&rsquo;\u00e9lectronique automobile.\u00a0Alli\u00e9 \u00e0 d&rsquo;autres m\u00e9taux, le tantale est \u00e9galement utilis\u00e9 dans la fabrication d&rsquo;outils en carbure pour les \u00e9quipements de travail des m\u00e9taux et dans la production de superalliages pour les composants des moteurs \u00e0 r\u00e9action.\u00a0Des compos\u00e9s de tantale tels que le pentoxyde de tantale sont utilis\u00e9s pour fabriquer des condensateurs et du verre \u00e0 indice de r\u00e9fraction \u00e9lev\u00e9 \u00e0 utiliser dans les objectifs d&rsquo;appareil photo.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n<div class=\"su-heading su-heading-style-modern-1-dark su-heading-align-left\" id=\"\" style=\"font-size:13px;margin-bottom:20px\"><div class=\"su-heading-inner\">\n<h2>Europium et Tantale &#8211; Comparaison dans le tableau<\/h2>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<table class=\"a\">\n<tbody>\n<tr class=\"b\">\n<td style=\"text-align: center;\">\u00c9l\u00e9ment<\/td>\n<td style=\"text-align: center;\"><b>Europium<\/b><\/td>\n<td style=\"text-align: center;\"><b>Tantale<\/b><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Densit\u00e9<\/td>\n<td style=\"text-align: center;\"><strong>5,244 g\/cm3<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>16,65 g\/cm3<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">R\u00e9sistance \u00e0 la traction ultime<\/td>\n<td style=\"text-align: center;\"><strong>120 MPa<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>760 MPa<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Limite d&rsquo;\u00e9lasticit\u00e9<\/td>\n<td style=\"text-align: center;\"><strong>60 MPa<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>705 MPa<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Module de Young<\/td>\n<td style=\"text-align: center;\"><strong>18,2 GPa<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>186 GPa<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">\u00c9chelle de Mohs<\/td>\n<td style=\"text-align: center;\"><strong>N \/ A<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>6,5<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Duret\u00e9 Brinell<\/td>\n<td style=\"text-align: center;\"><strong>N \/ A<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>800 MPa<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Duret\u00e9 Vickers<\/td>\n<td style=\"text-align: center;\"><strong>170 MPa<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>870 MPa<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Point de fusion<\/td>\n<td style=\"text-align: center;\"><strong>822\u00b0C<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>2996\u00b0C<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Point d&rsquo;\u00e9bullition<\/td>\n<td style=\"text-align: center;\"><strong>1529\u00b0C<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>5425\u00b0C<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Conductivit\u00e9 thermique<\/td>\n<td style=\"text-align: center;\"><strong>14W\/mK<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>57W\/mK<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Coefficient de dilatation thermique<\/td>\n<td style=\"text-align: center;\"><strong>35 \u00b5m\/mK<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>6,3 \u00b5m\/mK<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Chaleur sp\u00e9cifique<\/td>\n<td style=\"text-align: center;\"><strong><span style=\"text-align: start;\">0,18 J\/g\u00b7K<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong>0,14 J\/g\u00b7K<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Temp\u00e9rature de fusion<\/td>\n<td style=\"text-align: center;\"><strong>9,21 kJ\/mole<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>31,6 kJ\/mole<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Chaleur de vaporisation<\/td>\n<td style=\"text-align: center;\"><strong><span style=\"text-align: start;\">143,5 kJ\/mole<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong>743 kJ\/mole<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l&rsquo;europium et du tantale, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. Europium contre Tantale. 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":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Europium et Tantale - 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&#039;europium et du tantale, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. Europium contre tantale.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/material-properties.org\/fr\/europium-et-tantale-comparaison-proprietes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Europium et Tantale - Comparaison - Propri\u00e9t\u00e9s - Material Properties\" \/>\n<meta property=\"og:description\" content=\"Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l&#039;europium et du tantale, 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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