Chemistry
Chemistry, 12.08.2020 18:01, robert7248

Quando um metal alcalino, X, localizado no 3°período da tabela periódica dos elementos se une a um calcogênio, Y, localizado no 2º período forma-se um composto de fórmula . As lacunas podem ser completadas corretamente, respectivamente, com: * a) iônico e XY2. b) metálico, XY. c) iônico e X2Y. d) molecular e XY. e) molecular e XY2.

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Quando um metal alcalino, X, localizado no 3°período da tabela periódica dos elementos se une a um c...

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