III > II > I

II > III > I

II > I > III

I > II > III

${\mathrm{CCl}}_4$

$\mathrm{HI}$

${\mathrm{CO}}_2$

${\mathrm{BF}}_3$

A – III, B – IV, C – I, D – II

A – IV, B – I, C – III, D – II

A – IV, B – III, C – II, D – I

A – IV, B – III, C – I, D – II

Three resonance structures can be drawn for ozone.

${\mathrm{BF}}_3$ has non-zero dipole moment.

Dipole moment of ${\mathrm{NF}}_3$ is greater than that of ${\mathrm{NH}}_3$.

Three canonical forms can be drawn for ${\mathrm{CO}}_3^{2-}$ ion.

${\mathrm{CH}}_4>{\mathrm{H}}_2\mathrm{S}>{\mathrm{NH}}_3>\mathrm{HF}$

${\mathrm{H}}_2\mathrm{S}>{\mathrm{NH}}_3>\mathrm{HF}>{\mathrm{CH}}_4$

${\mathrm{NH}}_3>\mathrm{HF}>{\mathrm{CH}}_4>{\mathrm{H}}_2\mathrm{S}$

$\mathrm{HF}>{\mathrm{NH}}_3>{\mathrm{H}}_2\mathrm{S}>{\mathrm{CH}}_4$

${\mathrm{NO}}_2$

${\mathrm{POCl}}_3$

${\mathrm{CH}}_2\mathrm{O}$

${\mathrm{SbCl}}_5$

Ammonia, beryllium difluoride, water, 1,4-dichlorobenzene

Boron trifluoride, hydrogen fluoride, carbon dioxide, 1,3-dichlorobenzene

Nitrogen trifluoride, beryllium difluoride, water, 1,3-dichlorobenzene

Boron trifluoride, beryllium difluoride, carbon dioxide, 1,4-dichlorobenzene 

${\mathrm{NH}}_3<{\mathrm{BF}}_3<{\mathrm{NF}}_3<{\mathrm{H}}_2\mathrm{O}$

${\mathrm{BF}}_3<{\mathrm{NF}}_3<{\mathrm{NH}}_3<{\mathrm{H}}_2\mathrm{O}$

${\mathrm{BF}}_3<{\mathrm{NH}}_3<{\mathrm{NF}}_3<{\mathrm{H}}_2\mathrm{O}$

${\mathrm{H}}_2\mathrm{O}<{\mathrm{NF}}_3<{\mathrm{NH}}_3<{\mathrm{BF}}_3$

${\mathrm{ClF}}_3$

${\mathrm{NCl}}_3$

${\mathrm{BCl}}_3$

${\mathrm{PH}}_3$

The H—O—H bond angle in ${\mathrm{H}}_2\mathrm{O}$ is smaller than the H—N—H bond angle in ${\mathrm{NH}}_3$.

The H—C—H bond angle in ${\mathrm{CH}}_4$ is larger than the H—N—H bond angle in ${\mathrm{NH}}_3$.

The H—C—H bond angle in ${\mathrm{CH}}_4$, the H—N—H bond angle in ${\mathrm{NH}}_3$ and the H—O—H bond angle in ${\mathrm{H}}_2\mathrm{O}$ are all greater than 90°.

The H—O—H bond angle in ${\mathrm{H}}_2\mathrm{O}$ is larger than the H—C—H bond angle in ${\mathrm{CH}}_4$.