{"id":17861,"date":"2020-06-22T18:08:35","date_gmt":"2020-06-22T18:08:35","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/qual-e-a-principal-propriedade-do-radon-caracteristicas-do-radon-definicao\/"},"modified":"2020-07-22T10:54:46","modified_gmt":"2020-07-22T10:54:46","slug":"qual-e-a-principal-propriedade-do-radon-caracteristicas-do-radon-definicao","status":"publish","type":"post","link":"https:\/\/www.radiation-dosimetry.org\/pt-br\/qual-e-a-principal-propriedade-do-radon-caracteristicas-do-radon-definicao\/","title":{"rendered":"Qual \u00e9 a principal propriedade do r\u00e1don &#8211; Caracter\u00edsticas do r\u00e1don &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-u-clearfix su-u-trim\">Propriedades do Radon &#8211; Caracter\u00edsticas do Radon.\u00a0O r\u00e1don \u00e9 um g\u00e1s nobre incolor, inodoro e ins\u00edpido, que ocorre naturalmente como produto decadente do r\u00e1dio.\u00a0O s\u00edmbolo qu\u00edmico para Radon \u00e9 Rn.\u00a0Dosimetria de Radia\u00e7\u00e3o<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<p><strong>O r\u00e1don<\/strong>\u00a0\u00e9 um\u00a0<strong>g\u00e1s nobre<\/strong>\u00a0incolor, inodoro e ins\u00edpido\u00a0, que ocorre naturalmente como produto decadente do r\u00e1dio.\u00a0<strong>O r\u00e1don<\/strong>\u00a0\u00e9 um elemento qu\u00edmico com\u00a0<a title=\"N\u00famero at\u00f4mico\" href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/atomic-nuclear-structure\/atomic-number-proton-number\/\">n\u00famero at\u00f4mico\u00a0<\/a><strong>86, o<\/strong>\u00a0que significa que existem 86 pr\u00f3tons e 86 el\u00e9trons na estrutura at\u00f4mica.\u00a0O\u00a0<strong>s\u00edmbolo qu\u00edmico<\/strong>\u00a0para Radon \u00e9\u00a0<strong>Rn<\/strong>\u00a0.\u00a0Todos os is\u00f3topos de rad\u00f4nio s\u00e3o\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radioactive-decay\/\">radioativos<\/a>\u00a0, mas os dois is\u00f3topos de\u00a0<strong>rad\u00f4nio, rad\u00f4nio-222<\/strong>\u00a0e\u00a0<strong>rad\u00e3o-220,<\/strong>\u00a0s\u00e3o muito importantes do ponto de vista da prote\u00e7\u00e3o contra radia\u00e7\u00e3o.<\/p>\n<ul>\n<li>\n<figure id=\"attachment_25771\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-25771\"><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/radon-and-thoron.png\"><img loading=\"lazy\" class=\"size-medium wp-image-25771 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/radon-and-thoron-300x300.png\" alt=\"r\u00e1don e toro\" width=\"300\" height=\"300\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/radon-and-thoron-300x300.png\" \/><\/a><figcaption id=\"caption-attachment-25771\" class=\"wp-caption-text\">Fonte: JANIS (Software de Informa\u00e7\u00e3o de Dados Nucleares baseado em Java);\u00a0ENDF \/ B-VII.1<\/figcaption><\/figure>\n<p><strong>Rad\u00e3o-222<\/strong>\u00a0.\u00a0O is\u00f3topo de rad\u00f4nio-222 \u00e9 um produto natural de decomposi\u00e7\u00e3o do is\u00f3topo de ur\u00e2nio mais est\u00e1vel (ur\u00e2nio-238), portanto \u00e9 um membro da\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radioactive-decay\/radioactive-decay-chain\/radioactive-series-radioactive-cascade\/uranium-series\/\">s\u00e9rie<\/a>\u00a0de\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radioactive-decay\/radioactive-decay-chain\/radioactive-series-radioactive-cascade\/uranium-series\/\">ur\u00e2nio<\/a>\u00a0.<\/li>\n<li><strong>Rad\u00e3o-220<\/strong>\u00a0.\u00a0O is\u00f3topo do rad\u00f4nio-220, geralmente chamado de\u00a0<strong>t\u00f3rio<\/strong>\u00a0, \u00e9 um produto natural de decomposi\u00e7\u00e3o do is\u00f3topo de t\u00f3rio mais est\u00e1vel (\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/nuclear-fuel\/thorium\/\">t\u00f3rio-232<\/a>\u00a0), portanto, \u00e9 um membro da\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radioactive-decay\/radioactive-decay-chain\/radioactive-series-radioactive-cascade\/thorium-series\/\">s\u00e9rie<\/a>\u00a0de\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radioactive-decay\/radioactive-decay-chain\/radioactive-series-radioactive-cascade\/thorium-series\/\">t\u00f3rio<\/a>\u00a0.<\/li>\n<\/ul>\n<p>\u00c9 importante notar que o r\u00e1don \u00e9 um\u00a0<strong>g\u00e1s nobre<\/strong>\u00a0, enquanto todos os seus produtos de decomposi\u00e7\u00e3o s\u00e3o\u00a0<strong>metais<\/strong>\u00a0.\u00a0O principal mecanismo para a entrada de r\u00e1don na atmosfera \u00e9 a\u00a0<strong>difus\u00e3o atrav\u00e9s do solo<\/strong>\u00a0.\u00a0Como g\u00e1s, o r\u00e1don difunde-se atrav\u00e9s das rochas e do solo.\u00a0Quando o r\u00e1don se desintegra, os is\u00f3topos met\u00e1licos filhas s\u00e3o \u00edons que ser\u00e3o ligados a outras mol\u00e9culas como a \u00e1gua e as part\u00edculas de aerossol no ar.\u00a0Portanto, todas as discuss\u00f5es sobre as concentra\u00e7\u00f5es de rad\u00f4nio no ambiente se referem ao\u00a0<strong>rad\u00f4nio-222<\/strong>.\u00a0Enquanto a taxa m\u00e9dia de produ\u00e7\u00e3o de r\u00e1don-220 (thoron) \u00e9 aproximadamente a mesma do r\u00e1don-222, a quantidade de r\u00e1don-220 no ambiente \u00e9 muito menor que a do r\u00e1don-222 devido \u00e0 meia-vida significativamente mais curta ( tem menos tempo para difundir) o r\u00e1don 222 (55 segundos, contra 3,8 dias, respectivamente).\u00a0Simplesmente o rad\u00f4nio-220 tem menor chance de escapar da rocha.<\/p>\n<p>Veja tamb\u00e9m:\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-protection\/sources-of-radiation\/radon-health-effects-health-risks\/\">Radon &#8211; efeitos na sa\u00fade<\/a><\/p>\n<\/div>\n<\/div>\n<h2><span>Radon &#8211; Propriedades<\/span><\/h2>\n<table width=\"100%\">\n<thead>\n<tr>\n<th align=\"left\"><span>Elemento<\/span><\/th>\n<th align=\"left\"><span>Radon<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span>N\u00famero at\u00f4mico<\/span><\/td>\n<td><span>86<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>S\u00edmbolo<\/span><\/td>\n<td><span>Rn<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Categoria do elemento<\/span><\/td>\n<td><span>G\u00e1s nobre<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Fase no STP<\/span><\/td>\n<td><span>G\u00e1s<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Massa at\u00f4mica [amu]<\/span><\/td>\n<td><span>222<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Densidade em STP [g \/ cm3]<\/span><\/td>\n<td><span>9,73<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Configura\u00e7\u00e3o eletr\u00f4nica<\/span><\/td>\n<td><span>[Hg] 6p6<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Poss\u00edveis Estados de Oxida\u00e7\u00e3o<\/span><\/td>\n<td><span>0 0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Afinidade eletr\u00f4nica (kJ \/ mol)<\/span><\/td>\n<td><span>&#8211;<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Eletronegatividade [escala de Pauling]<\/span><\/td>\n<td><span>&#8211;<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>1a energia de ioniza\u00e7\u00e3o [eV]<\/span><\/td>\n<td><span>10.7485<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Ano da descoberta<\/span><\/td>\n<td><span>1900<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Descobridor<\/span><\/td>\n<td><span>Friedrich Ernst Dorn<\/span><\/td>\n<\/tr>\n<tr>\n<th align=\"left\"><span>Propriedades t\u00e9rmicas<\/span><\/th>\n<th align=\"left\"><\/th>\n<\/tr>\n<tr>\n<td><span>Ponto de fus\u00e3o [escala Celsius]<\/span><\/td>\n<td><span>-71<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Ponto de ebuli\u00e7\u00e3o [escala Celsius]<\/span><\/td>\n<td><span>-61,8<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Condutividade t\u00e9rmica [W \/ m K]<\/span><\/td>\n<td><span>0,00361<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Calor espec\u00edfico [J \/ g K]<\/span><\/td>\n<td><span>0,09<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Calor de fus\u00e3o [kJ \/ mol]<\/span><\/td>\n<td><span>2,89<\/span><\/td>\n<\/tr>\n<tr>\n<td><span>Calor de vaporiza\u00e7\u00e3o [kJ \/ mol]<\/span><\/td>\n<td><span>16,4<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span>Massa at\u00f4mica de rad\u00f4nio<\/span><\/h3>\n<p><strong><span>A massa at\u00f4mica de Radon \u00e9 222 u.\u00a0<\/span><\/strong><\/p>\n<p><span>Observe que, cada elemento pode conter mais is\u00f3topos, portanto, essa massa at\u00f4mica resultante \u00e9 calculada a partir de is\u00f3topos que ocorrem naturalmente e sua abund\u00e2ncia.<\/span><\/p>\n<p><span>A unidade de medida da massa \u00e9 a\u00a0\u00a0<\/span><strong><span>unidade de massa at\u00f4mica (amu)<\/span><\/strong><span>\u00a0.\u00a0Uma unidade de massa at\u00f4mica \u00e9 igual a 1,66 x 10\u00a0<\/span><sup><span>-24<\/span><\/sup><span>\u00a0\u00a0gramas.\u00a0Uma unidade de massa at\u00f4mica unificada \u00e9\u00a0<\/span><strong><span>aproximadamente<\/span><\/strong><span>\u00a0a massa de um nucleon (um \u00fanico pr\u00f3ton ou n\u00eautron) e \u00e9 numericamente equivalente a 1 g \/ mol.<\/span><\/p>\n<h3><span>Densidade do r\u00e1don<\/span><\/h3>\n<p><strong><span>Densidade de rad\u00e3o \u00e9\u00a0\u00a0<\/span><\/strong><b><span>9,73 g \/ cm\u00a0<\/span><sup><span>3<\/span><\/sup><\/b><span>\u00a0.<\/span><br \/>\n<a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Density-Gas-Liquid-Solid-min.png?c3bb24\"><img loading=\"lazy\" class=\"wp-image-16265 size-medium alignright lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Density-Gas-Liquid-Solid-min-241x300.png?c3bb24\" alt=\"Densidade - G\u00e1s - L\u00edquido - S\u00f3lido\" width=\"241\" height=\"300\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Density-Gas-Liquid-Solid-min-241x300.png?c3bb24\" \/><\/a><\/p>\n<p class=\"wp-caption-text\"><span>Densidades t\u00edpicas de v\u00e1rias subst\u00e2ncias \u00e0 press\u00e3o atmosf\u00e9rica.<\/span><\/p>\n<p><strong><span>Densidade<\/span><\/strong><span>\u00a0\u00e9 definida como a\u00a0<\/span><strong><span>massa por unidade de volume<\/span><\/strong><span>\u00a0.\u00a0\u00c9 uma\u00a0<\/span><a title=\"Propriedades extensivas e intensivas\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/extensive-and-intensive-properties\/\"><strong><span>propriedade intensiva<\/span><\/strong><\/a><span>\u00a0, matematicamente definida como massa dividida por volume:<\/span><\/p>\n<p><strong><span>\u03c1 = m \/ V<\/span><\/strong><\/p>\n<p><span>Por palavras, a densidade (\u03c1) de uma subst\u00e2ncia \u00e9 a massa total (m) dessa subst\u00e2ncia dividida pelo volume total (V) ocupado por essa subst\u00e2ncia.\u00a0A unidade SI padr\u00e3o \u00e9 em\u00a0<\/span><strong><span>quilogramas por metro c\u00fabico<\/span><\/strong><span>\u00a0(\u00a0<\/span><strong><span>kg \/ m\u00a0<\/span><sup><span>3<\/span><\/sup><\/strong><span>\u00a0).\u00a0A unidade de ingl\u00eas padr\u00e3o \u00e9 a\u00a0<\/span><strong><span>libra-massa por p\u00e9 c\u00fabico<\/span><\/strong><span>\u00a0(\u00a0<\/span><strong><span>lbm \/ ft\u00a0<\/span><sup><span>3<\/span><\/sup><\/strong><span>\u00a0).<\/span><\/p>\n<p><span>Veja tamb\u00e9m:\u00a0<\/span><a title=\"O que \u00e9 densidade - F\u00edsica\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/thermodynamic-properties\/what-is-density-physics\/\"><span>O que \u00e9 densidade<\/span><\/a><\/p>\n<p><span>Veja tamb\u00e9m:\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/thermodynamic-properties\/what-is-density-physics\/densest-materials-on-the-earth\/\"><span>Materiais mais densos da Terra<\/span><\/a><\/p>\n<h3><span>R\u00e1don &#8211; Ponto de Fus\u00e3o e Ponto de Ebuli\u00e7\u00e3o<\/span><\/h3>\n<p><strong><span>Ponto de fus\u00e3o de rad\u00e3o \u00e9\u00a0\u00a0<\/span><\/strong><b><span>-71 \u00b0 C<\/span><\/b><span>\u00a0.<\/span><\/p>\n<p><strong><span>Ponto de ebuli\u00e7\u00e3o de rad\u00e3o \u00e9\u00a0\u00a0<\/span><\/strong><b><span>-61,8 \u00b0 C<\/span><\/b><span>\u00a0.<\/span><\/p>\n<p><span>Observe que esses pontos est\u00e3o associados \u00e0\u00a0<\/span><a title=\"Press\u00e3o atmosf\u00e9rica\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/thermodynamic-properties\/what-is-pressure-physics\/atmospheric-pressure\/\"><span>press\u00e3o atmosf\u00e9rica padr\u00e3o<\/span><\/a><span>\u00a0.<\/span><\/p>\n<h3><span>Calor Espec\u00edfico ao R\u00e1don, Calor Latente de Fus\u00e3o, Calor Latente de Vaporiza\u00e7\u00e3o<\/span><\/h3>\n<p><strong><span>Calor espec\u00edfico de rad\u00e3o \u00e9\u00a0\u00a0<\/span><\/strong><b><span>de 0,09 J \/ g K<\/span><\/b><span>\u00a0.<\/span><\/p>\n<p><strong><span>O calor latente de fus\u00e3o do r\u00e1don \u00e9 de\u00a0\u00a0<\/span><\/strong><b><span>2,89 kJ \/ mol<\/span><\/b><span>\u00a0.<\/span><\/p>\n<p><strong><span>O calor latente de vaporiza\u00e7\u00e3o do r\u00e1don \u00e9 de\u00a0\u00a0<\/span><\/strong><b><span>16,4 kJ \/ mol<\/span><\/b><span>\u00a0.<\/span><\/p>\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Este artigo \u00e9 baseado na tradu\u00e7\u00e3o autom\u00e1tica do artigo original em ingl\u00eas. Para mais informa\u00e7\u00f5es, consulte o artigo em ingl\u00eas. Voc\u00ea pode nos ajudar. Se voc\u00ea deseja corrigir a tradu\u00e7\u00e3o, envie-a para: translations@nuclear-power.com ou preencha o formul\u00e1rio de tradu\u00e7\u00e3o on-line. Agradecemos sua ajuda, atualizaremos a tradu\u00e7\u00e3o o mais r\u00e1pido poss\u00edvel. Obrigado.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Propriedades do Radon &#8211; Caracter\u00edsticas do Radon.\u00a0O r\u00e1don \u00e9 um g\u00e1s nobre incolor, inodoro e ins\u00edpido, que ocorre naturalmente como produto decadente do r\u00e1dio.\u00a0O s\u00edmbolo qu\u00edmico para Radon \u00e9 Rn.\u00a0Dosimetria de Radia\u00e7\u00e3o O r\u00e1don\u00a0\u00e9 um\u00a0g\u00e1s nobre\u00a0incolor, inodoro e ins\u00edpido\u00a0, que ocorre naturalmente como produto decadente do r\u00e1dio.\u00a0O r\u00e1don\u00a0\u00e9 um elemento qu\u00edmico com\u00a0n\u00famero at\u00f4mico\u00a086, o\u00a0que significa &#8230; <a title=\"Qual \u00e9 a principal propriedade do r\u00e1don &#8211; Caracter\u00edsticas do r\u00e1don &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/qual-e-a-principal-propriedade-do-radon-caracteristicas-do-radon-definicao\/\" aria-label=\"More on Qual \u00e9 a principal propriedade do r\u00e1don &#8211; Caracter\u00edsticas do r\u00e1don &#8211; Defini\u00e7\u00e3o\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[51],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qual \u00e9 a principal propriedade do r\u00e1don - Caracter\u00edsticas do r\u00e1don - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Propriedades do r\u00e1don - Caracter\u00edsticas do r\u00e1don. 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