Chapter 2, Problem 2D.19E

(a)

Interpretation Introduction

Interpretation:

The bond length of $\text{C}-\text{F}$ in ${\text{CF}}_{\text{4}}$ has to be estimated.

Concept Introduction:

The bond length is estimated to be average of covalent radii of two atoms within a bond. Each ion contributes to the bond length as illustrated asfollows:

The expression to calculate the bond length is as follows:

  $\text{Bond length}=r_{\text{A}}+r_{\text{B}}$

Here,

$r_{\text{A}}$ denotes covalent radius of atom A.

$r_{\text{B}}$ denotes covalent radius of atom B.

(b)

Interpretation Introduction

Interpretation:

The bond length of $\text{Si}-\text{F}$ in ${\text{SiF}}_{\text{4}}$ has to be estimated.

Concept Introduction:

Refer to part (a).

(b)

Interpretation Introduction

Interpretation:

The bond length of $\text{Sn}-\text{F}$ in ${\text{SnF}}_{\text{4}}$ has to be estimated. The reason for the specific trend has to be determined.

Concept Introduction:

Refer to part (a).