`BF_(3)` does not obey the octet rule.

BF_(3) does not obey octet rule, yet it exists -explain.

Which of the following molecule does not obey the octet rule and also has lone pair on the central atom.

Which of the following molecule does not obey the octet rule and also has Ione pair on the central atom?

In which of the given molecules the central atom does not obey the octet rule? CiF_(3),SF_(2),OsF_(8),BC l_(3),NH_(3),NO_(2)

State Octet rule.

Who gave the octet rule?