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Coordination Compounds question

2009 · Q87
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Coordination Compounds question

2009 · Q87

NEETChemistryCoordination CompoundsMCQ+4 / −1
Which of the following complex ions is expected to absorb visible light?
(At. nos. Zn = 30, Sc = 21, Ti = 22, Cr = 24)
  1. A
    [Ti(en)2(NH3)2]4+
  2. B
    [Cr(NH3)6]3+
  3. C
    [Zn(NH3)6]2+
  4. D
    [Sc(H2O)3(NH3)3]3+
View written solutionFree

Correct answer: B

In [Cr(NH3)6]3+, Cr is present as Cr+3

Cr+3 = [Ar] 3d34s0

AIPMT 2009 Chemistry - Coordination Compounds Question 59 English Explanation

Due to presence of 3 unpaired electrons it absorbs light of visible region.

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