CBSE 2023 · Region 2 · Set 2 · Q18 · 1 mark
Assertion (A) : Transition metals have high enthalpy of atomisation.
Reason (R) : Greater number of unpaired electrons in transition metals results in weak metallic bonding.
Official answer
From CBSE’s own marking scheme for this paper.
(C)
(A) is true, but (R) is false.
The d-and f-Block ElementsGeneral Properties of the Transition Elements (d-Block)Analyseassertion_reasonmedium
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CBSE Class 12 Chemistry past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.