Chapter 9, Problem 9.94QP

Interpretation Introduction

Interpretation:

The electron-dot formula of the ${\text{AlH}}_{\text{4}}^{\text{-}}\text{ion}$ has to be drawn.

Concept introduction:

Electron-dot structure, otherwise known as Lewis dot diagrams or electron dot structures that show the bond between atoms and lone pairs of electrons that are present in the molecule.  Lewis structure represents each atom and their position in structure using the chemical symbol.  Excess electrons forms the lone pair are given by pair of dots, and are located next to the atom.