Assertion: Al₂Cl₆ exists but B₂Cl₆ does not exist due to the smaller size of B and the larger size of chlorine.
Reason: The smaller size of B prevents the formation of octahedral geometry.
a) Both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
b) Both Assertion and Reason are true, but the Reason is NOT the correct explanation of the Assertion.
c) Assertion is true, but the Reason is false.
d) Assertion is false, but the Reason is true.