Question

An element has a electronic configuration of 12.
1) what is the element?
2) write its electronic configuration?
3) in which group or period it lies? ​

Answer 1

Answer:

hiiiii

the element is magnesium and the e.c of mg is 2 in k 8in l 2in m shekk

it's belong to second group

hope it will help you

Answer 2

1) Magnesium

2) Electronic Configuration of Magnesium

Atomic no. = 12

No. of electrons = 12

Electronic Configuration

K Shell. L shell. M shell

_2_. _8_. _2_.

Valency = 2.

3)It belongs to 2nd Group.