Chapter 7.4, Problem 1RC

Interpretation Introduction

Interpretation:

The four different metal ions are given in the statement, many of the ions correctly matched in same electronic configuration but one of the ions does not matched in respective electronic configuration. In this connection fourth ( $F{e}^{2+}$) ion electronic configuration should be identified.

Concept Introduction:

Electronic configuration: The electronic configuration is the distribution of electrons (e^-) of an given molecule or respective atoms in atomic or molecular orbitals.

The Aufbau’s principle: This rule statues that ground state of an atom or ions electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. If consider the 1s shell is filled the 2s subshell is occupied.

Hund's Rule: The every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.