Assertion : Both `BF_(3) and PF_(5)` do not obey octet rule.
Reason : Both are electron deficient molecules.

BF_(3) does not obey the octet rule.

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

Atoms combine to form molecules to get stability. During the formation of molecules octet may be attained. But BF_3 is an exception to octet rule. As BF_3 , B_2H_6 is also an electron deficient compound. Comment.

Give one molecule that does not obey octet rule.

Give one example of a molecule not obeying octet rule.

Assertion :- CH_4 obeys the octet rule. Reason :- During the formation of CH_4 molecules, carbon atom achieves an octet.

Assertion: BF_(3) is weaker lewisi acid than BC l_(3) . Reason: BF_(3) is less electron deficient thann BCl_(3) .

Assertion: BF_(3) is weaker lewisi acid than BC l_(3) . Reason: BF_(3) is less electron deficient thann BCl_(3) .

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : BeCl_(2) in vapour phase is electron deficient molecule. R : Any molecule in which central atom is having incomplete octet is known as electron deficient molecule.