Assertion : The heavier p-block elements do not form strong `pi` bonds. Reason : The heavier elements of p-block form `d pi-p pi` or `d pi - d pi` bonds.
A
If both (A) and (R) are correct and (R) is the correct explanation of (A).
B
If both (A) and (R) are correct, but (R) is not the correct explanation of (A).