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Multiple choice

Arrange the following complexes in increasing order of Δo values.

  1. [Co(NH3)6]3+
    2. [Rh(NH3)6]3+
    3. [Ir(NH3)6]3+

  1. 1 < 2 < 3

  2. 1 < 3 < 2

  3. 2 < 1 < 3

  4. 2 < 3 < 1

  5. 3 < 2 < 1

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A Correct answer
Explanation

For a given oxidation state, the value of Δ increases as one moves down a group.

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