Chemistry
Chemistry, 09.07.2021 16:10, crjjk01

Um elemento X, pertence ao terceiro período da tabela periódica, forma com o hidrogênio um composto de fórmula H2X e com o potássio um composto de fórmula K2X. a) Represente a configuração eletrônica desse elemento.
b) A que família pertence o elemento X?

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Um elemento X, pertence ao terceiro período da tabela periódica, forma com o hidrogênio um composto...

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