1.

An element ‘X’ has valency -3. Its electronic configuration could be.

Answer»

X has VALENCY -3 , it means that the ELEMENT will gain 3 electrons to become stable or to gain the nearest nobel GAS CONFIGURATION. The Nitrogen family has the valency -3 so, the element will be ONE of the following:-NitrogenPhosphorusArsenic AntimonyBismuth



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