pBlock ElementsII - Result Question 148

####36. Which one of the following is the strongest base? (1989,2M)

(a) AsH3

(b) NH3

(c) PH3

(d) SbH3

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Solution:

  1. Amongst XH3 where ’ X ’ is group- 15 elements, basic strength decreases from top to bottom. Hence, NH3 is strongest base.


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