pBlock ElementsII - Result Question 149

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

(a) $NF _3$

(b) $NCl _3$

(c) $NBr _3$

(d) $NI _3$

$(1987,1 M)$

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Solution:

  1. The electron withdrawing inductive effect of halogen decreases electron density on nitrogen, lowers basic strength. Since, fluorine is most electronegative, $NF _3$ is least basic.


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