Describe Aufbau principle . Write the electronic configuration for Ni^(2+) using Aufbau principle.

Describe Aufbau principle . Write the electronic configuration for Ni^

1.	Describe Aufbau principle . Write the electronic configuration for Ni^(2+) using Aufbau principle.
Answer» Solution : (a) AUFBAU principle: The word Aufbau in German means building up in the ground state of the Atmos the orbitals are filled in the order of their increasing energy orbital available to them. Once the lower energy orbitals . The order of FILLING of VARIOUS orbitals as per the Aufbau principle which is in accordance with (n+1) RULE. The lower the VALUE of (n+1)for an orbitalthe lower is it's energy. If two orbitalhave the same (n+1) value , the orbital with lower value of n has the lower energy. `Ni-1s^(2)2s^(2)2p^(2)3s^(2)3p^(2)4s^(2)3d^(8)` `:.Ni-1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(0)3d^(8)`