2007-09-15 06:12:50 · 7 answers · asked by divya sundar 1 in Science & Mathematics ➔ Chemistry
Divya,
The color in KMnO4 arises from an electronic transition, but it is actually not a d-d transition, since the Mn in this compound has no d electrons. It arises from a charge transfer reaction within the molecule, in which photons promote an electron from the highest energy molecular orbital in one of the Mn-O bonds to an empty d orbital on the manganese. This promotion is equivalent to the energy of a yellow photon, so yellow light is absorbed leaving us to see purple, the complementary color.
2007-09-15 07:33:21 · answer #1 · answered by mnrlboy 5 · 8⤊ 0⤋
Colour Of Potassium Permanganate
2016-12-26 21:10:05 · answer #2 · answered by ? 4 · 0⤊ 0⤋
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why is potassium permanganate pinkish purple in colour? d-d transition? r something with light rays??
2015-08-10 10:24:59 · answer #3 · answered by Madge 1 · 1⤊ 0⤋
Pinkish Purple Color
2016-10-02 10:50:59 · answer #4 · answered by ? 4 · 0⤊ 0⤋
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potassium permanganate becomes pink if it is diluted more and more. and it is pink because of d-d transition.
2016-04-04 23:24:41 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Photons falling on a solution of KMnO4 are absorbed, and promote electrons within the 3d sub-level of manganese. When the light is reflected (or transmitted) it is missing the frequencies of the light absorbed, and so it looks pink.
2007-09-15 06:24:58 · answer #6 · answered by Gervald F 7 · 1⤊ 3⤋
in the mno4(-) ion,due to resonance the electron goes to the empty d orbitals of mn+7 from the hybrid orbitals of mn04- ...its hybridisation is d3s....it shows the orange yellow color as the photon absorbed is corresponding to the orange yellow color...
2015-04-04 18:07:00 · answer #7 · answered by ankush 1 · 0⤊ 0⤋