Chemistry - Complete d-block Question with Solution | TestHub
ChemistryComplete d-blockd-blockMedium2 minQB
ChemistryMediumassertion reason
Assertion(A): K₂CrO₄ has a yellow colour due to charge transfer.
Reason(R): CrO₄²⁻ ion is tetrahedral in shape.
Options:
Answer:
B
Solution:
Assertion (A) is true: K₂CrO₄ is yellow due to ligand-to-metal charge transfer (LMCT) from oxygen to Cr⁶⁺ (d⁰ system).
Reason (R) is true: The CrO₄²⁻ ion has a tetrahedral shape, with Cr at the center and four oxygen atoms at the corners.
However, the tetrahedral shape (R) does not explain the origin of the color (A). Therefore, both statements are true, but (R) is not the correct explanation for (A).
The final answer is B
Stream:JEESubject:ChemistryTopic:Complete d-blockSubtopic:d-block
⏱ 2mℹ️ Source: QB
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