Chapter 21, Problem 58IAE

Interpretation Introduction

Interpretation:

The Lewis structure of triiodide ion is to be determined along with the reason for the stability of CsI₃ towards decomposition to the iodide and the instability of LiI₃.

Concept introduction:

The polarizing power of a cation refers to its ability to distort the electron cloud of anion and the tendency of anion to get polarized is known as its polarizability.

Lewis structures are the diagrams that show the bonding between the atoms of the molecules and existing lone pairs of electrons.

• Bonding electrons are those electrons which are shared between the atoms resulting in the formation of bond.

• Non-bonding electrons are the valence electrons of the atom which are not shared with another atom.