Octet rule is not obeyed by during its formation?

Octet rule is not obeyed by during its formation?

Explanation
The compound that does not obey the octet rule is  NF₃. 

In NF₃, nitrogen has only 7 valence electrons and forms three single bonds with fluorine atoms, giving it a total of 6 electrons in its outermost shell, which violates the octet rule.