How many of the following trends is(are) CORRECT with respect to the properties of hydrides of group 15 elements? i. Basic strength: NH 3 PH 3 AsH 3 SbH 3 ≥ BiH 3 ii. Reducing character: NH 3 BiH 3 iv. Boiling point: NH 3

Question

How many of the following trends is(are) CORRECT with respect to the properties of hydrides of group 15 elements? i. Basic strength: NH 3> PH 3> AsH 3> SbH 3 ≥ BiH 3 ii. Reducing character: NH 3< PH 3< AsH 3< SbH 3< BiH 3 iii. Thermal stability: NH 3> PH 3> AsH 3> SbH 3> BiH 3 iv. Boiling point: NH 3< PH 3< AsH 3< SbH 3< BiH 3 (A) (B) (C) (D)

Tardigrade Admin · Accepted Answer

The boiling point of NH 3 is higher than that of PH 3 and AsH 3. This is due to its tendency to form hydrogen bonds. Hence, the trend in boiling point is PH 3< AsH 3< NH 3< SbH 3< BiH 3.

The boiling point of NH3​ is higher than that of PH3​ and AsH3​. This is due to its tendency to form hydrogen bonds. Hence, the trend in boiling point is PH3​<AsH3​<NH3​<SbH3​<BiH3​.

The boiling point of $N H_{3}$ is higher than that of $P H_{3}$ and $A s H_{3}$ . This is due to its tendency to form hydrogen bonds. Hence, the trend in boiling point is
$P H_{3} < A s H_{3} < N H_{3} < S b H_{3} < B i H_{3}$ .