Which one of the following exceeds octet rule ?

Options

A. The incomplete octet of central atom
B. An odd number of electrons on central atom
C. Expanded octed of the central atom
D. All of these

Answer

D

Explanation

According to octet rule, the central atom must have 8 electrons but in some compounds the number of electrons is more than 8, or less than 8 or an odd number of electrons is left on the central atom e.g., `PF_(5), BCl_(3), NO`.