Assertion : Carbon has unique ability to form `p pi-p pi` multiple bonds with itself and with other atomic of small size and high electronegativety.
Reason : Heaviur elements of group `14th` do not form `p pi -p pi` bonds because their atomic orbital are too large and diffuse to have effective sideways overapping.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer

b

Explanation

Both Assertion and Reason are true but Reason is not true explantion (directly not but indirectly true) of Assertion. Atomic size of carbon is smaller and thus is has effective overiapping with itself and with other atom of small size and high electromatively .Few example of multiple bonding are C= C, C = C,C= O, C = S and C = N heaver element do not form `p pi-pi m` bonds because their atomic orbitals are too large and diffuse to have effective overlapping.