{"id":989,"date":"2023-07-19T18:48:00","date_gmt":"2023-07-19T18:48:00","guid":{"rendered":"https:\/\/chemuza.org\/pt\/de-transicao\/"},"modified":"2023-07-19T18:48:00","modified_gmt":"2023-07-19T18:48:00","slug":"de-transicao","status":"publish","type":"post","link":"https:\/\/chemuza.org\/pt\/de-transicao\/","title":{"rendered":"Metais de transi\u00e7\u00e3o"},"content":{"rendered":"<p><strong>Os metais de transi\u00e7\u00e3o<\/strong> s\u00e3o encontrados no dia a dia, em objetos de uso comum como utens\u00edlios de cozinha, em ve\u00edculos e at\u00e9 no sangue. Fazem parte de um dos maiores e mais importantes grupos da tabela peri\u00f3dica e possuem caracter\u00edsticas muito espec\u00edficas. Em seguida, indique o que s\u00e3o, quais s\u00e3o seus elementos mais importantes e as aplica\u00e7\u00f5es mais relevantes.<\/p>\n<h2> O que s\u00e3o metais de transi\u00e7\u00e3o?<\/h2>\n<p> Os metais de transi\u00e7\u00e3o s\u00e3o definidos como os <strong>elementos localizados na parte central do sistema peri\u00f3dico, no bloco d<\/strong> . Caracteriza-se principalmente pela inclus\u00e3o de sua configura\u00e7\u00e3o eletr\u00f4nica no orbital d, parcialmente preenchido com el\u00e9trons. Al\u00e9m disso, \u00e9 definido como aqueles metais cujo \u00e1tomo possui uma subcamada incompleta, que pode gerar c\u00e1tions com a mesma particularidade.<\/p>\n<p> Observe que este grupo <strong>\u00e9 composto por 40 elementos qu\u00edmicos que variam de 21 a 30, de 39 a 48, de 71 a 80 e de 103 a 112<\/strong> . S\u00e3o chamados de metais de transi\u00e7\u00e3o devido \u00e0 sua estabilidade, pois n\u00e3o precisam reagir com nenhum outro elemento. Em outras palavras, quando falta um el\u00e9tron na camada externa para ficar completa, ela o retira da camada interna e assim por diante. Este fen\u00f4meno \u00e9 conhecido como transi\u00e7\u00e3o eletr\u00f4nica.<\/p>\n<h2> Elementos pertencentes ao grupo dos metais de transi\u00e7\u00e3o<\/h2>\n<ol>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/titanio\/\">Tit\u00e2nio (Ti)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/cromo\/\">Cromo (Cr)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/escandio\/\">Esc\u00e2ndio (Sc)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/vanadio\/\">Van\u00e1dio (V)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/ferro\/\">Ferro (Fe)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/niquel\/\">N\u00edquel (Ni)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/manganes\/\">Mangan\u00eas (Mn)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/zinco\/\">Zinco (Zn)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/cobalto\/\">Cobalto (Co)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/cobre\/\">Cobre (Cu)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/zirconio\/\">Zirc\u00f4nio (Zr)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/molibdenio\/\">Molibd\u00eanio (Mo)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/rutenio\/\">Rut\u00eanio (Ru)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/itrio\/\">\u00cdtrio (Y)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/niobio\/\">Ni\u00f3bio (Nb)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/tecnecio\/\">Tecn\u00e9cio (Tc)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/paladio\/\">Pal\u00e1dio (Pd)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/dinheiro\/\">Prata (Ag)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/rodio\/\">R\u00f3dio (Rh)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/lutecio\/\">Lut\u00e9cio (Lu)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/cadmio\/\">C\u00e1dmio (Cd)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/tungstenio\/\">Tungst\u00eanio (W)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/osmio\/\">\u00d3smio (Osso)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/renio\/\">R\u00eanio (Re)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/tantalo\/\">T\u00e2ntalo (Ta)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/iridio\/\">Ir\u00eddio (GB)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/mercurio\/\">Merc\u00fario (Hg)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/platina\/\">Platina (PD)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/laurent\/\">Laurentius (esquerda)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/ouro\/\">Ouro (Au)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/dubnio\/\">D\u00fabnio (Db)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/bohrio\/\">Bohrio (Bh)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/hassio\/\">H\u00e1ssio (Hs)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/darmstadtio\/\">Esta\u00e7\u00e3o Darm (Ds)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/seborgio\/\">Seaborgio (Sg)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/meitnerio\/\">Meitn\u00e9rio (Monte)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/copernico\/\">Cop\u00e9rnico (Cn)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/roentgenius\/\">Roentg\u00eanio (Rg)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/hafnio\/\">H\u00e1fnio (Hf)<\/a><\/li>\n<li> <a href=\"https:\/\/chemuza.org\/pt\/rutherfordio\/\">Rutherf\u00f3rdio (Rf)<\/a><\/li>\n<\/ol>\n<h2> Caracter\u00edsticas principais<\/h2>\n<p> Uma das <strong>caracter\u00edsticas dos metais de transi\u00e7\u00e3o<\/strong> que melhor os identifica \u00e9 o fato de se encontrarem na parte central da tabela peri\u00f3dica. Al\u00e9m disso, inclui o orbital d parcialmente preenchido com el\u00e9trons na configura\u00e7\u00e3o eletr\u00f4nica. Outros destaques s\u00e3o resumidos a seguir:<\/p>\n<ul>\n<li> <strong>Estes s\u00e3o metais t\u00edpicos<\/strong> . Em outras palavras, pode-se dizer que eles t\u00eam altos pontos de fus\u00e3o e ebuli\u00e7\u00e3o, s\u00e3o duros e s\u00e3o excelentes condutores de eletricidade e calor. Eles s\u00e3o vers\u00e1teis em estados de oxida\u00e7\u00e3o e atingem altas cargas positivas.<\/li>\n<li> \u00c9 composto por elementos qu\u00edmicos que variam de <strong>21 a 30<\/strong> como Ferro, Cobalto, N\u00edquel, Esc\u00e2ndio, Tit\u00e2nio, Van\u00e1dio, Cromo, Mangan\u00eas, Cobre, Zinco e <strong>de 39 a 48<\/strong> por &#8216;\u00cdtrio, Zirc\u00f4nio, Ni\u00f3bio, R\u00f3dio, Molibd\u00eanio, Tecn\u00e9cio. , Rut\u00eanio, Pal\u00e1dio, Prata, C\u00e1dmio.<\/li>\n<li> De <strong>71 a 80<\/strong> Lut\u00e9cio, H\u00e1fnio, Ir\u00eddio, T\u00e2ntalo, Volfr\u00e2mio, R\u00eanio, \u00d3smio, Platina, Ouro, Merc\u00fario e de <strong>103 a 112<\/strong> por Lawr\u00eancio, Roentg\u00eanio, Rutherf\u00f3rdio, D\u00fabnio, Seab\u00f3rgio, B\u00f3hrio, H\u00e1ssio, Meitn\u00e9rio, Darmstadtium, Copernicium.<\/li>\n<li> Possuem <strong>estrutura compacta, s\u00e3o d\u00facteis, male\u00e1veis e s\u00f3lidos<\/strong> \u00e0 temperatura ambiente, com exce\u00e7\u00e3o do merc\u00fario. Al\u00e9m disso, eles desempenham um papel importante nos processos biol\u00f3gicos.<\/li>\n<\/ul>\n<p> Comparados a outros grupos, <strong>os metais de transi\u00e7\u00e3o s\u00e3o muito diferentes<\/strong> e est\u00e3o relacionados entre si, mais em per\u00edodos do que em grupos, o que \u00e9 normal. Quimicamente s\u00e3o menos met\u00e1licos, mas fisicamente mais duros.<\/p>\n<h2> Usos e propriedades de metais de transi\u00e7\u00e3o<\/h2>\n<p> Esse grupo de metais est\u00e1 presente no dia a dia. Est\u00e3o <strong>dispon\u00edveis na natureza, n\u00e3o na forma pura, mas na forma de minerais, sulfatos, \u00f3xidos e carbonatos<\/strong> . Entre suas propriedades e utiliza\u00e7\u00f5es mais not\u00e1veis, podemos citar:<\/p>\n<ul>\n<li> Possuem <strong>excelente atividade catal\u00edtica<\/strong> , pois formam catalisadores homog\u00eaneos e heterog\u00eaneos, ideais para utiliza\u00e7\u00e3o em diversos processos qu\u00edmicos.<\/li>\n<li> Devido \u00e0 sua estrutura, <strong>possuem a capacidade de formar \u00edons e complexos coloridos<\/strong> . A diferen\u00e7a de energia determina a cor da luz absorvida, refletindo diferentes tonalidades.<\/li>\n<li> Eles podem atuar com diferentes n\u00fameros de oxida\u00e7\u00e3o devido a buracos nos orbitais d. Al\u00e9m disso, tendem a formar \u00e2nions, am\u00f4nia, cianeto e oxalatos, fazendo com que suas propriedades variem consideravelmente.<\/li>\n<li> A n\u00edvel f\u00edsico, s\u00e3o considerados <strong>metais muito duros, com elevados pontos de fus\u00e3o e ebuli\u00e7\u00e3o<\/strong> , com excelente n\u00edvel de condu\u00e7\u00e3o el\u00e9trica e t\u00e9rmica. Isso se deve \u00e0 capacidade dos el\u00e9trons do orbital d de se localizarem na rede met\u00e1lica.<\/li>\n<li> Dentre as propriedades qu\u00edmicas podemos citar a <strong>capacidade de formar ligas entre elas<\/strong> , gerando resultados surpreendentes. Al\u00e9m disso, seus potenciais normais podem ser menos negativos, incluindo metais nobres.<\/li>\n<li> <strong>Eles hidrolisam facilmente<\/strong> . Al\u00e9m disso, oferecem colora\u00e7\u00f5es fortes e paramagn\u00e9ticas.<\/li>\n<\/ul>\n<p> Concluindo, <strong>os metais de transi\u00e7\u00e3o<\/strong> s\u00e3o um grande grupo de elementos qu\u00edmicos da tabela peri\u00f3dica com capacidades essenciais. S\u00e3o encontrados no dia a dia, inclusive nos processos biol\u00f3gicos do corpo, por isso s\u00e3o muito valorizados a n\u00edvel qu\u00edmico e f\u00edsico.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Os metais de transi\u00e7\u00e3o s\u00e3o encontrados no dia a dia, em objetos de uso comum como utens\u00edlios de cozinha, em ve\u00edculos e at\u00e9 no sangue. Fazem parte de um dos maiores e mais importantes grupos da tabela peri\u00f3dica e possuem caracter\u00edsticas muito espec\u00edficas. Em seguida, indique o que s\u00e3o, quais s\u00e3o seus elementos mais importantes &#8230; <a title=\"Metais de transi\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/chemuza.org\/pt\/de-transicao\/\" aria-label=\"Mais em Metais de transi\u00e7\u00e3o\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-989","post","type-post","status-publish","format-standard","hentry","category-metais"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Metais de transi\u00e7\u00e3o | O que s\u00e3o, caracter\u00edsticas e elementos<\/title>\n<meta name=\"description\" content=\"Os metais de transi\u00e7\u00e3o t\u00eam 40 representantes na tabela peri\u00f3dica e possuem algumas caracter\u00edsticas surpreendentes. 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