Question

Write all quantum numbers of 2p2​

Answer 1

Answer:

According to Hund's rule pairing of electrons occurs when all available sub orbitals (where electrons have the same magnetic numbers) are filled with electrons with parallel or same spins. This can be understood by minimum energy conisderations.

In an 2p^(2) configurations only two electrons are to be filled in the 2p orbital. So both will be present in separate orbitals with parallel spins and the number of unpaired electrons will hence be two.