Question

Atomic numbers of few elements are given 10,20,7,14. Identify the elements. Identify the group and period number of the elements. What would be the electronic configuration of each of these elements. Determine the valency of these elements

Answer 1

HEY USER!!! HERE'S YOUR ANSWER
For Atomic Number, Z=10
grp=18
period=2
electronic configuration-. 2,8
valency- 0

For atomic number , Z=20
grp=2
period=4
electronic configuration-. 2,8,8,2
valency- 2

For atomic number , Z=7
grp=15
period=2
electronic configuration-. 2,5
valency- 3

For atomic number , Z=14
grp=14
period=2
electronic configuration-. 2,8,4
valency- 4

Hope it helps you :)