Question

How we write valency of potassium

Answer 1

The valency of potassium is one.

Method 1

It is because K is situated in the first group, elements in the first group have valency 1.

Method 2

The electronic configuration of K is 2,8,8,1 because it's atomic number is 19, so as 1 is left at the last shell its valency is one.

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