Question

Write the electronic configuration of Mg, Al and

Si to which groups and period/s they belong to?

[Atomic No. of Mg ,Al and Si are 12,13 and 14

respectively.]​

Answer 1

Magnesium - Atomic number = 12.

Electron distribution = (2,8,2).

Electronic configuration = 1s2, 2s2, 2p6, 3s2.

Aluminium - Atomic number = 13.

Electron distribution = (2,8,2,1).

Electron distribution = 1s2, 2s2, 2p6 3s2, 3p1.

Silicon - Atomic number = 14.

Electron distribution = (2,8,2,2).

Electronic configuration = 1s2, 2s2, 2p6, 3s2, 3p2.