Joey was taking a chemistry test. in one question, he was asked to write the electron configuration for antimony (sb). he wrote it out like this: 1s22s22p63s23p63d104s24p64d105s25p3

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

it would be a gas formation