Question

Write the complete electron configuration for the nickel atom. 

Using NOBLE GAS notation write the electron configuration for the manganese atom.

Answer 1

sol:-

Nickle atomic number is 28 and electronic configuration is : 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸ .

Manganese atomic number is 25 and electronic configuration using noble gas notation is : [ Ar ] 4s² 3d⁵ .

here atomic number of noble gas i.e argon (Ar) is 18 .

here , electronic configuration is written in increasing order of energy of the orbitals i.e 1s orbital has lowest energy .