Question

2) elaement with atomic number 12 belongs to which period and group​

Answer 1

Answer:

Electronic Configuration-2,8,2

Since 3 shells the it belongs to 3rd period

2 valence electrons, so it is from group 2

Explanation:

hope it helps...

Answer 2

Ello.. ✌✌

The element with atomic number 12 is magnesium.

electronic configuration for

Mg= 1s^2, 2s^2, 2p^6, 3s^2

=> There are 2 electrons in the outermost shell so it belongs to the IIA group.

=> Mg has an outermost shell, n =3, therefore, the third period.