Chapter 12, Problem 84E

Interpretation Introduction

Concept Introduction:

Amongst, the given solids, the solid that would have highest melting point is to be determined and the reason is to be stated.

• Solids may be crystalline or amorphous. Crystalline solids are of three types:

  • Molecular Solids like ${\text{CO}}_{\text{2}}\text{and}{\text{H}}_{\text{2}}\text{O}\text{.}$

  • Ionic Solids like $\text{NaCl, KCl, }\text{}\text{and}{\text{CaCl}}_{\text{2}}\text{.}$

  • Atomic Solids may be metallic solids $\left(\text{K, Na, Li, }\text{}\text{Al, etc}\text{.}\right)$, covalent solids like diamond $\left(\text{C}\left(\text{s}\right)\right),$ or nonbonding solids like xenon, krypton, and helium.

• Melting point of a substance depends on the types of intermolecular forces present in a molecule. The stronger the intermolecular force, higher is the value of the melting point.

• The melting points of covalent atomic solids are very high than other forms of crystalline solids.