Chapter 6, Problem 72QP

Interpretation Introduction

Interpretation:

In many-electron atoms, the orbital lower in energy is to be identified.

Concept introduction:

The lower energy orbitals are filled before the higher energy orbitals.

Electrons first enter the orbital that contains lower energy.

In equal energy orbitals, electrons first enter theorbital with parallel spins.

The energies of orbitals in many-electron atomdepends on both the value of principal quantum number $(n)$ and angular momentum quantum number $\left(l\right)$.