1. Para um elemento químico representativo (grupos 1, 2, 13, 14, 15, 16, 17, 18), o número de elétrons na camada de valência é o número do grupo. O número de camadas eletrônicas é o número do período. O elemento químico com configuração eletrônica 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3 está situado na tabela periódica no grupo: * 1 ponto 3A e período 4. 3B e período 3. 5A e período 4. 5B e período 5. 4A e período 4.
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1. Para um elemento químico representativo (grupos 1, 2, 13, 14, 15, 16, 17, 18), o número de elétro...
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