The colour of potassium dichromate is due to · ABC26IN0616
Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Coordination Compounds – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Easy
The colour of potassium dichromate is due to
(a)d-d transition
(b)transition in $\mathrm{K^{+}}$ ion
(c)Ligand-to-metal charge transfer
(d)metal-to-ligand charge transfer
Answer
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Explanation
Cr(VI) in Cr₂O₇²⁻ is d⁰, so there are no d–d transitions; the orange colour is an O(2p) → Cr(3d) ligand-to-metal charge transfer.
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