Question

Write the electronic configuration of an element whose atomic number is 12.

Answer 1

Atomic number: 12

Element: Magnesium

Electronic Configuration: 2,8,2

Answer 2

Answer:

The electronic configuration of an element whose atomic number is 12 = $1s^{2} 2s^{2} 2p^{6} 3s^{2}$

Explanation:

The electron configuration is the distribution of electrons in atomic or molecular orbitals of an atom or molecule (or other physical structure) in atomic or molecular physics and quantum chemistry.

Magnesium has the atomic number 12

The number of electrons in neutral magnesium = 12

∴ The electronic configuration is $1s^{2} 2s^{2} 2p^{6} 3s^{2}$