Question

The electronic structure of atoms of some metals are given below state the position of those elements in the modern periodic table : (1) 2,8,4 (2) 2,8,8,1

Answer 1

(1) 2,8,4

3rd period ( since there are 3 shells )
14th group ( as there are 4 valence electrons )

(2) 2,8,8,1

4th period
1st group

Answer 2

Answer:

1. period-3 , group-14

2. period- 4 , group -1