Question

Write the atomic number electronic configuration and valency of first to 10 element

Answer 1

1.hydrogen. valency -1 / configuration-1
2.helium.valency-2. / configuration-2,0
3.lithium. valency-1. / configuration-2,1
4.berylliyum. valency-2. / configuration-2,2
5.boron. valency-3. / configuration-2,3
6.carbon. valency-4./ configuration-2,4
7.nitrogen. valency-3. / configuration-2,5
8.oxygen. valency-2. / configuration-2,6
9.fluorine . valency-1. / configuration-2,7
10.neon. valency-0. / configuration-2,8

Answer 2

THIS IS THE SOLUTION