Chapter 10, Problem 10.95P

(a)

Interpretation Introduction

Interpretation:

The distance between $\text{H}$ atoms in ${\text{C}}_2{\text{H}}_2$ is to be calculated.

Concept introduction:

The bond length or bond distance is the average distance between the nuclei of two bonded atoms in a molecule. When two similar atoms are bonded together, half of the bond length is known as the covalent radius. The bond length depends on the number of bonded of two atoms. The unit of bond length is picometer.

In single, double and triple bonds, the order of bond length is as follows:

  $\text{Triple bond }<\text{Double bond }<\text{Single bond}$

(b)

Interpretation Introduction

Interpretation:

The distance between $\text{F}$ atoms in ${\text{SF}}_6$ is to be determined.

Concept introduction:

The bond length or bond distance is the average distance between the nuclei of two bonded atoms in a molecule. When two similar atoms are bonded together, half of the bond length is known as the covalent radius. The bond length depends on the number of bonded of two atoms. The unit of bond length is picometer.

In single, double and triple bonds, the order of bond length is as follows:

  $\text{Triple bond }<\text{Double bond }<\text{Single bond}$

(c)

Interpretation Introduction

Interpretation:

The distance between equatorial $\text{F}$ atoms in ${\text{PF}}_5$ is to be determined.

Concept introduction:

The bond length or bond distance is the average distance between the nuclei of two bonded atoms in a molecule. When two similar atoms are bonded together, half of the bond length is known as the covalent radius. The bond length depends on the number of bonded of two atoms. The unit of bond length is picometer.

In single, double and triple bonds, the order of bond length is as follows:

  $\text{Triple bond }<\text{Double bond }<\text{Single bond}$