Question

Which of the following is not known.

• A. $NCl_{5}$
• B. $NI_{3}$
• C. $SbCl_{3}$
• D. $NCl_{3}$

Answer 1

Answer: (A)

$NCl_{5}$

Answer 2

$NCl_{5}$ is not known because of absence of d-orbitals in nitrogen.