Question

The atomic nuber of an element X is 19? what will be valency of Xand write down the electronic congrugation of X​

Answer 1

1s2 ,2s2, 2p6, 3s2, 3p6, 4s1

Therefore valency will be 1 this is potassium

Answer 2

The element X is Potassium .

Its electronic Congregation is 2 , 8 , 8 , 1

The valency of Element X is 1.


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