pBlock ElementsII - Result Question 37

####37. Amongst the trihalides of nitrogen, which one is least basic?

(a) NF3

(b) NCl3

(c) NBr3

(d) NI3

(1987,1M)

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Answer:

Correct Answer: 37. (a)

Solution:

  1. The electron withdrawing inductive effect of halogen decreases electron density on nitrogen, lowers basic strength. Since, fluorine is most electronegative, NF3 is least basic.


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