Question

Element X has twelve protons in its nucleus.To which group in the periodic able would it
a)IVA(14th). b)IIIA(2nd). c)IIIA(13th)
d)VIA(16th)

Answer 1

ANSWER..

NO. OF PROTONS =NO OF ELECTRONS
ELECTRONIC CONFIGURATION =2,8,2.
NO OF SHELLS =3
SO THE ELEMENT X LIES IN GROUP III A. OPTION B)

HOPE IT HELPS

Answer 2

Hello mate here is your answer...
Element X belongs to 2nd group.

Reason..
This element has 12 orotons means it has 12 electrons also. So the electronic configuration of this element will be 2,8,2. This element's valency is 2(electrons in the last orbit). Therefore this belongs to second group.