Question

Electronic configuration of an element is 2,8,6 to which group and period it belongs.And what is the valency justify

Answer 1

it belongs to group= 6+10=16
and lies in 3rd period as it has 3 shells
its valency is 8-6=2

Answer 2

Answer:

1 . Since ‘X’ has three energy shells and period number of an element is equal to the number  of energy shells, X belongs to 3rd period.

2 . X has 6 valence electrons it belongs to group 16.

3.  Valency will be 2. To acquire noble gas configuration it will gain 2 electrons.