Question

Which of following trihalides of nitrogen behave as the weakest base?

• A. $NF_{3}$
• B. $NCl_{3}$
• C. $NBr_{3}$
• D. $NI_{3}$

Answer 1

Answer: (A)

$NF_{3}$

Answer 2

Because of high electronegativity of F atom, the nitrogen atom attains positive charge and therefore, it has practically no electron donating properties.