Question

can someone answer this question...pls fast!​

Answer 1

element x have atomic number 13(aluminium)

E.C= k=2 ,L=8 , M=3

valency =3

valence electrons=3

Answer 2

Maximum number of electrons possible in K and L shells are 2 and 8 respectively.

K and L shells are full and M shell has 3 electrons.

So, the electronic configuration of the element is {2,8,3}.

Atomic number will be 13.

The element is Aluminium.

The valency will be 3 as it loses three electrons to attain the octet state of stability.

The number of valence electrons is 3.