Question

find out the valenct of a) Na b) Ne​

Answer 1

Answer:

hey there mate here's my answer

valency of

a.Na-sodium= 1

b.Ne-neon=0

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Answer 2

Answer:

The valency of an electron depends upon its number of electrons left in its last orbital.

So,

electronic configuration of Na=11

so,its configuration is 2,8,1...

In its last configuration the no. of electrons left is 1

So, the valency of Na is 1

Similarly,

Ne=10

it's configuration is 2,8.

So, the valency of Ne is 0 because its octate is filled and no left electron in the other orbitals.