pBlock ElementsII 1 Question 36
36. Which one of the following is the strongest base? $(1989,2 \mathrm{M})$
(a) $\mathrm{AsH} _{3}$
(b) $\mathrm{NH} _{3}$
(c) $\mathrm{PH} _{3}$
(d) $\mathrm{SbH} _{3}$
Show Answer
Answer:
Correct Answer: 36. (b)
Solution:
- Amongst $X \mathrm{H} _{3}$ where ’ $X$ ’ is group- 15 elements, basic strength decreases from top to bottom. Hence, $\mathrm{NH} _{3}$ is strongest base.
