{"id":376,"date":"2023-07-23T19:17:14","date_gmt":"2023-07-23T19:17:14","guid":{"rendered":"https:\/\/chemuza.org\/pt\/tabela-periodica-de-eletrons-de-valencia\/"},"modified":"2023-07-23T19:17:14","modified_gmt":"2023-07-23T19:17:14","slug":"tabela-periodica-de-eletrons-de-valencia","status":"publish","type":"post","link":"https:\/\/chemuza.org\/pt\/tabela-periodica-de-eletrons-de-valencia\/","title":{"rendered":"Tabela peri\u00f3dica com el\u00e9trons de val\u00eancia (imagem)"},"content":{"rendered":"
\"tabela<\/figure>\n

Esta \u00e9 uma tabela peri\u00f3dica<\/a> na qual os el\u00e9trons de val\u00eancia s\u00e3o rotulados.<\/p>\n

Vamos entender o conceito de el\u00e9trons de val\u00eancia<\/a> junto com o n\u00famero de el\u00e9trons de val\u00eancia dos elementos do grupo principal e dos elementos de transi\u00e7\u00e3o<\/a> .<\/p>\n

O que s\u00e3o el\u00e9trons de val\u00eancia?<\/strong><\/h2>\n

El\u00e9trons de val\u00eancia s\u00e3o os el\u00e9trons localizados na camada mais externa ou no n\u00edvel de energia<\/a> de um \u00e1tomo<\/a> que est\u00e3o envolvidos na liga\u00e7\u00e3o qu\u00edmica.<\/p>\n

Por exemplo, o magn\u00e9sio<\/a> possui 2 el\u00e9trons em sua \u00f3rbita<\/a> mais externa, portanto possui 2 el\u00e9trons de val\u00eancia. [1]<\/sup><\/a> <\/p>\n

\"el\u00e9trons<\/figure>\n

Esses el\u00e9trons s\u00e3o respons\u00e1veis pelas propriedades qu\u00edmicas de um elemento, como sua reatividade e os tipos de liga\u00e7\u00f5es qu\u00edmicas que ele pode formar com outros \u00e1tomos.<\/p>\n

O n\u00famero de el\u00e9trons de val\u00eancia que um \u00e1tomo possui determina sua posi\u00e7\u00e3o na tabela peri\u00f3dica e sua capacidade de formar liga\u00e7\u00f5es qu\u00edmicas<\/a> .<\/p>\n

El\u00e9trons de val\u00eancia dos principais elementos do grupo<\/strong><\/h2>\n

Os principais elementos do grupo, tamb\u00e9m chamados de elementos representativos, est\u00e3o localizados nos grupos 1, 2 e 13 a 18 da tabela peri\u00f3dica.<\/p>\n

O n\u00famero de el\u00e9trons de val\u00eancia nesses elementos \u00e9 igual ao n\u00famero do grupo.<\/p>\n

Por exemplo, os elementos do Grupo 1, como o l\u00edtio<\/a> e o s\u00f3dio<\/a> , possuem um el\u00e9tron de val\u00eancia, enquanto os elementos do Grupo 2, como o magn\u00e9sio<\/a> e o c\u00e1lcio<\/a> , possuem dois el\u00e9trons de val\u00eancia.<\/p>\n

Os elementos do grupo 13, como boro<\/a> e alum\u00ednio<\/a> , possuem tr\u00eas el\u00e9trons de val\u00eancia e assim por diante.<\/p>\n

Esses el\u00e9trons de val\u00eancia s\u00e3o respons\u00e1veis pelas propriedades qu\u00edmicas e reatividade \u00fanicas dos elementos.<\/p>\n

El\u00e9trons de val\u00eancia de transi\u00e7\u00e3o e elementos de transi\u00e7\u00e3o interna<\/strong><\/h2>\n

Os el\u00e9trons de val\u00eancia dos elementos de transi\u00e7\u00e3o<\/a> e dos elementos de transi\u00e7\u00e3o internos<\/a> s\u00e3o mais complicados de determinar do que os dos elementos do grupo principal.<\/p>\n

Na verdade, a subcamada<\/a> d dos elementos de transi\u00e7\u00e3o e a subcamada f dos elementos de transi\u00e7\u00e3o internos est\u00e3o incompletamente preenchidas e est\u00e3o muito pr\u00f3ximas da subcamada externa s.<\/p>\n

Como resultado, os el\u00e9trons dos subn\u00edveis d e s nos elementos de transi\u00e7\u00e3o e dos subn\u00edveis f e s nos elementos de transi\u00e7\u00e3o internos podem se comportar como el\u00e9trons de val\u00eancia.<\/p>\n

Para elementos de transi\u00e7\u00e3o, os el\u00e9trons de val\u00eancia podem variar de 3 a 12 devido \u00e0 contribui\u00e7\u00e3o dos el\u00e9trons do subn\u00edvel d e do subn\u00edvel s. Em alguns casos, os el\u00e9trons em orbitais d incompletos tamb\u00e9m s\u00e3o considerados el\u00e9trons de val\u00eancia. [2]<\/p>\n

Da mesma forma, para elementos de transi\u00e7\u00e3o internos (ou elementos do bloco f), os el\u00e9trons de val\u00eancia podem variar de 3 a 16 devido \u00e0 contribui\u00e7\u00e3o dos el\u00e9trons do subn\u00edvel f e do subn\u00edvel s. [3] El\u00e9trons em orbitais d incompletos tamb\u00e9m podem ser considerados el\u00e9trons de val\u00eancia em alguns metais de transi\u00e7\u00e3o internos.<\/p>\n

\u00c9 importante notar que para elementos de transi\u00e7\u00e3o e de transi\u00e7\u00e3o interna, os el\u00e9trons de val\u00eancia s\u00e3o os el\u00e9trons presentes nas camadas fora do n\u00facleo do g\u00e1s nobre.<\/p>\n","protected":false},"excerpt":{"rendered":"

Esta \u00e9 uma tabela peri\u00f3dica na qual os el\u00e9trons de val\u00eancia s\u00e3o rotulados. Vamos entender o conceito de el\u00e9trons de val\u00eancia junto com o n\u00famero de el\u00e9trons de val\u00eancia dos elementos do grupo principal e dos elementos de transi\u00e7\u00e3o . O que s\u00e3o el\u00e9trons de val\u00eancia? El\u00e9trons de val\u00eancia s\u00e3o os el\u00e9trons localizados na camada … 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":[12],"tags":[],"class_list":["post-376","post","type-post","status-publish","format-standard","hentry","category-estrutura-de-lewis"],"yoast_head":"\nTabela peri\u00f3dica com el\u00e9trons de Val\u00eancia (Imagem) - Chemuza<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chemuza.org\/pt\/tabela-periodica-de-eletrons-de-valencia\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tabela peri\u00f3dica com el\u00e9trons de Val\u00eancia (Imagem) - Chemuza\" \/>\n<meta property=\"og:description\" content=\"Esta \u00e9 uma tabela peri\u00f3dica na qual os el\u00e9trons de val\u00eancia s\u00e3o rotulados. Vamos entender o conceito de el\u00e9trons de val\u00eancia junto com o n\u00famero de el\u00e9trons de val\u00eancia dos elementos do grupo principal e dos elementos de transi\u00e7\u00e3o . O que s\u00e3o el\u00e9trons de val\u00eancia? El\u00e9trons de val\u00eancia s\u00e3o os el\u00e9trons localizados na camada ... 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