JEE Main 2024 — p Block Elements (Group 15, 16, 17 & 18) Question with Solution
JEE Main 2024 (30 Jan Shift 2)
Question
A. The stability of the hydrides decreases in the order
B. The reducing ability of the hydrides increases in the order
C. Among the hydrides, is strong reducing agent while is mild reducing agent.
D. The basicity of the hydrides increases in the order
Choose the most appropriate from the option given below:
Choose an option
Show full solutionCorrect option: C
Step-by-step explanation
On moving down the group from , the atomic size increases. Consequently, the electron density on the central atom decreases and the basic strength decreases.
With an increase in size, the bond becomes weaker, hence, the thermal stability decreases down the group.
The highest bond length will have less bond energy, indicating that it is a strong reducing agent.
On moving down the group, bond strength of M–H bond decreases, which reduces the thermal stability but increases reducing nature of hydrides,
Hence and are correct statements.
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the p Block Elements (Group 15, 16, 17 & 18) chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2024, covering the p Block Elements (Group 15, 16, 17 & 18) chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.