JEE PYQ: P Block Elements Question 3
Question 3 - 2021 (16 Mar Shift 1)
A group 15 element, which is a metal and forms a hydride with strongest reducing power among group 15 hydrides. The element is:
(1) Sb
(2) P
(3) As
(4) Bi
Show Answer
Answer: (4)
Solution
In group 15: N, P are non-metals; As, Sb are metalloids; Bi is a metal. Hydrides of group 15 elements are $\text{NH}_3$, $\text{PH}_3$, $\text{AsH}_3$, $\text{SbH}_3$, $\text{BiH}_3$. In $\text{BiH}_3$, hydrogen atom gets partial negative charge because hydrogen is more electronegative than bismuth. $\text{BiH}_3$ is a strong reducing agent because $\text{H}^-$ is a strong reducing agent.
BETA
