Which sequence ranks the indicated protons in order of decreasing acidity (First one is most acidic)

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.

i think it is true since you can test the answer and can use observations to complete it.