Question

The electronic configuration of an element X is 2,8,1 2 a.

1. Find the atomic number of X

i. What is the valency of X​

Answer 1

Answer:

atomic number is 22

element is titanium

valancy is 4

Answer 2

Answer:

the atomic number of x is 22 and the valency of x is 4

how means 2+8+12=22 so the atomic number is 22

and in 22 - 18is 4 so this is the best