1.

Valency of Na (2,8,1) : 1 (One) : : Valency of P(2 , 8 , 5) :_________

Answer»

Solution :3 (Three) - Na loses 1 electron to get the configuration of He (3b) and P REQUIRES 3 ELECTRONS to get a configuration 2,8,8. (Ar). Therefore, the valency of P is 3.


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