Question

Assertion (A) : ${BF}_3$ is a weaker Lewis acid than ${BCl}_3$. Reason (R) : The planar ${BF}_3$ molecule is stabilised to a greater extent than ${BCl}_3$ by ${B}-X \pi$-bonding.

Accepted Answer

Both $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$.

Answer

Both $\mathbf{A}$ and $\mathbf{R}$ are true but $\mathbf{R}$ is not the correct explanation of $\mathbf{A}$.

Answer

$\mathbf{A}$ is true but $\mathbf{R}$ is false.

Answer

$\mathbf{A}$ is false but $\mathbf{R}$ is true.

JEE CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

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