P-Block Elements Ques 233

Question: Which of the following is not known

[MP PET/PMT 1988; NCERT 1982; CBSE PMT 1989; MP PET 1993]

Options:

A) $ NCl_5 $

B) $ NI_3 $

C) $ SbCl_3 $

D) $ NCl_3 $

Show Answer

Answer:

Correct Answer: A

Solution:

$ NCl_5 $ is not known because of absence of d-orbitals in nitrogen.



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