Chapter 6, Problem 19ST

Interpretation Introduction

Interpretation:

The explanation for the fact that iron ions can have a charge of either $2+$ or $3+$ is to be stated.

Concept introduction:

The periodic table represents elements in order of their atomic masses. In the modern periodic table, the horizontal rows are known as periods and vertical columns are known as groups. There are seven periods and eighteenth groups in the modern periodic table. Electronic configuration tells about the arrangement of the electrons in each subshell and each orbit of an atom.