Assertion : Transition metals show variable valency.
Reason : Transition metals have a large energy difference between the $ns^2$ and $(n-1)d$ electrons.
Reason : Transition metals have a large energy difference between the $ns^2$ and $(n-1)d$ electrons.
- ABoth Assertion & Reason are True & Reason is a correct explanation of the Assertion.
- BBoth Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
- CAssertion is True but the Reason is False.
- DBoth Assertion & Reason are False.
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Which block element from the following are known as transition elements?
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