(C) Transition metals exhibit variable valency because the energy difference between the $ns$ and $(n-1)d$ orbitals is very small. This allows electro

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Assertion is True but the Reason is False.

(C) Transition metals exhibit variable valency because the energy difference between the $ns$ and $(n-1)d$ orbitals is very small. This allows electrons from both the $ns$ and $(n-1)d$ subshells to participate in bond formation. Therefore,the Assertion is True,but the Reason is False because the energy difference is small,not large.

Class 12 Chemistry d-and f-Block Elements General Characteristics

Medium

Assertion : Transition metals show variable valency.
Reason : Transition metals have a large energy difference between the $ns^2$ and $(n-1)d$ electrons.

A
Both Assertion & Reason are True & Reason is a correct explanation of the Assertion.
B
Both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C
Assertion is True but the Reason is False.
D
Both Assertion & Reason are False.