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.

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. Explain the stability of B_2H_6 with the help of a diagram.

In the following question, an Assertion (A) is followed by a corresponding Reason (R). Use the following keys to choose the appropriate answer. Assertion : In the formation of water molecule, both hydrogen and oxygen atoms attain octet of electrons. Reason : Oxygen atom forms two ionic or electrovalent bonds with two hydrogen atoms.

When bromo benzene is monochlorinated, two Isomeric compounds A and B are obtained. Monobromination of A gives several isomeric products of molecular formula C_6 H_3 CI Br_2 , while monobromination of B yields only 2 isomers C and D . Compound C is identical with one of the compounds obtained from bromination of A , however D is totally different from any of the isomeric cómpounds obtained from the bromination of A , Give structures of A, B, C and D and also structures of four isomeric monobrominated products of A Support your answer with reasoning.

Which of the following is untrue regarding BF_3 ? It is a Lewis acid , It is a planar molecule, It has a dipole moment, It forms a compound with NH_3