JEE Main 202628 JanuaryMorning Shift
- Exam
- JEE Main
- Year
- 2026
- Date
- 28 January
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- p Block Elements (Group 15, 16, 17 & 18)
JEE Main 2026 · 28 January · Morning Shift · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Regarding the hydrides of group 15 elements EH_ 3 ( E=N , P, As,...
Regarding the hydrides of group 15 elements \mathrm{E}=\mathrm{N}, 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:
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:
Options
- AB & C only
- BA, B, C & D
- CA & D only
- DA, B & C only
Correct answer
D. A, B & C only
Step-by-step solution
For group 15 hydrides (N, P, As, Sb):
Statement A is correct—stability decreases down the group as H-E bond strength decreases.
Statement B is correct—basicity decreases as the central atom becomes less electronegative, making it less willing to share electron pairs.
Statement C is correct—reducing character increases down the group as the hydrides become easier to oxidize.
Statement D is incorrect—boiling points do not consistently increase; NH₃ is anomalously high (-33°C) due to strong hydrogen bonding, but PH₃ (-87°C) is lower, and the trend is irregular.
Therefore, A, B & C only are correct.
Statement A is correct—stability decreases down the group as H-E bond strength decreases.
Statement B is correct—basicity decreases as the central atom becomes less electronegative, making it less willing to share electron pairs.
Statement C is correct—reducing character increases down the group as the hydrides become easier to oxidize.
Statement D is incorrect—boiling points do not consistently increase; NH₃ is anomalously high (-33°C) due to strong hydrogen bonding, but PH₃ (-87°C) is lower, and the trend is irregular.
Therefore, A, B & C only are correct.