Q11 / 90 · JEE Main 2022 (24 Jun Shift 1) · Chemistry

The most stable trihalide of nitrogen is.

Correct answer
A
${NF}_{3}$
B
${NCl}_{3}$
C
${NBr}_{3}$
D
${NI}_{3}$

Solution

The size of halogen increases from $F$ to $I$ . The $N - F$ bond is stronger than other $N - X$ bonds due to the high electronegativity of fluorine. Larger the size of the halogen, less is the stability of nitrogen halide:

The stability order is ${NF}_{3} > {NCl}_{3} > {NBr}_{3} > {NI}_{3}$ .

Hence, the correct answer is option: 'A'.

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