Chemistry · d and f Block Elements

JEE Main 2025 — 28 January, Evening Shift — Question 45

A group 15 element forms $\mathrm{d} \pi-\mathrm{d} \pi$ bond with transition metals. It also forms hydride, which is a strongest base among the hydrides of other group members that form $\mathrm{d} \pi-\mathrm{d} \pi$ bond. The atomic number of the element is___ .

Answer: 15

Numerical answer — enter this value.

Step-by-step solution

Phosphorus belongs to $15^{\text {th }}$ group and forms $\mathrm{d} \pi-\mathrm{d} \pi$ bond with transition metal and $\mathrm{PH}_{3}$

is strongest base among the other group members excepet $\mathrm{NH}_{3}$ .

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Exam: JEE Main 2025
Paper: 28 January, Evening Shift
Subject: Chemistry
Chapter: d and f Block Elements
Topic: Properties of general compounds of transition elements

Answer: 15

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