Chapter 7.8, Problem 1RC

Interpretation Introduction

Interpretation:

The same set of four quantum numbers of three electrons in $\text{3p}$ orbital has to be identified.

Concept introduction:

Pauli Exclusion Principle:

It states that in an atom no two electrons have same quantum numbers.  That is two electrons in an atom can have same three quantum number ($\text{n,}\text{l,}{\text{m}}_{\text{l}}$) but the spin quantum number differs because of electrons in same orbital spins in opposite direction.