Chapter 2, Problem 2D.18E

(a)

Interpretation Introduction

Interpretation:

The bond length of $\text{C}-\text{O}$ in formaldehyde 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 below.

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 $\text{C}-\text{O}$ in dimethyl ether has to be estimated.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The bond length of $\text{C}-\text{O}$ in methanol has to be estimated.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The bond length of $\text{C}-\text{O}$ in methanethiol has to be estimated.

Concept Introduction:

Refer to part (a).