Chemistry · p-Block Elements (Group 15-18)

JEE Main 2026 — 28 January, Morning Shift — Question 52

Regarding the hydrides of group 15 elements $\mathrm{EH}_{3}$ ( $\mathrm{E}=\mathrm{N}, \mathrm{P}, \mathrm{As}, \mathrm{Sb}$ ), select the correct statement from the following:

A. The stability of hydrides decreases down the group.

B. The basicity of hydrides decreases down the group.

C. The reducing character increases down the group.

D. The boiling point increases down the group.

Choose the correct answer from the options given below:

Option A:
A, B & C only
Correct
Option B:
A & D only
Option C:
A, B, C & D
Option D:
B & C only

Answer: A

Step-by-step solution

Stability: $\mathrm{NH}_{3}>\mathrm{PH}_{3}>\mathrm{AsH}_{3}>\mathrm{SbH}_{3}>\mathrm{BiH}_{3}$ Basicity : $\mathrm{NH}_{3}>\mathrm{PH}_{3}>\mathrm{AsH}_{3}>\mathrm{SbH}_{3}>\mathrm{BiH}_{3}$ Reducing character : $\mathrm{NH}_{3}<\mathrm{PH}_{3}<\mathrm{AsH}_{3}<\mathrm{SbH}_{3}< \mathrm{BiH}_{3}$ Boiling point: $\mathrm{PH}_{3}<\mathrm{AsH}_{3}<\mathrm{NH}_{3}<\mathrm{SbH}_{3}<\mathrm{BiH}_{3}$

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Exam: JEE Main 2026
Paper: 28 January, Morning Shift
Subject: Chemistry
Chapter: p-Block Elements (Group 15-18)
Topic: Introduction & Properties of Group 15: Nitrogen Family