1.

what is the valency of chlorinesulphur magnesium

Answer»

The electronic configuration of chlorine can be written as 2, 8, 7. 2, 8, 7 electrons are distributed in the shells K, L, M respectively. Therefore, valence electron in chlorine is 7 and it needs to gain 1 electron from the outermost orbit to attain octet. Hence, the valency of chlorine is 1.

Similarly, valency of sulphur will be 2. it's electric configuration-- 2,8,6. so,sulphur needs 2 more electrons to complete it's outermost shell.

By same process valency of magnesium is 2



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