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Chemistry · 2023 · 1 mark
The d-and f-Block ElementsGeneral Properties of the Transition Elements (d-Block)1 markUnderstandassertion reason
CBSE 2023 · Region 4 · Set 2 · Q18
Assertion (A): Manganese shows the highest oxidation state of +7 in 3d series. Reason (R): Transition metals show variable oxidation states.
Assertion (A): Manganese shows the highest oxidation state of +$\displaystyle 7$ in 3d series.
Reason (R): Transition metals show variable oxidation states.
Official answer
(B)
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
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CBSE Class 12 Chemistry past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.