Chemistry

China

17 April, 12:06

Escriba las fórmulas de los siguientes compuestos iónicos:

A) óxido de sodio

B) sulfuro de hierro (que contenga el ion Fe 2+)

C) Sulfato de cobalto (que contenga los iones Co 3 + y SO 2 - (arriba) y 4 (abajo)

D) Fluoruro de bario

Ayúdenme, por favor!

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