Chapter 9, Problem 69E

Interpretation Introduction

Interpretation: The number of $2p$ electrons in each of the given element is to be determined.

Concept Introduction: The occupation of an orbitals by the electrons for specific atom can be illustrated with the help of an electronic configuration.

Electrons occupy the orbitals in order to minimize the energy of the atom, as a result, higher energy orbitals fill after lower energy orbitals.

The order in which orbitals get filled is:

$\text{1}s2s2p\text{ 3}s\text{ 3}p\text{ 4}s\text{ 3}d\text{ 4}p\text{ 5}s\text{ 4}d\text{ 5}p\text{ 6}s$