Why there are some exceptions for writing electronic configuration for copper and chromium ?
1 Answer
Electrostatic potential energy with low potential energies are generally more stable, and thus favored over those with higher potential energies.
Explanation:
A
One might expect a copper atom to have four electrons in its
Atoms would prefer electron configuration with half-filled or fully-filled orbitals so as to minimizes potential energies. Also, orbitals with opposite spins tend to be unstable due to electrostatic repulsions between electrons and are therefore generally not as favored as orbitals with identical electron spins.
As a result, copper atoms would assign one of the electrons initially belonging to the
Similarly, electrons fill chromium orbitals in a way such that the