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Question
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complex:
K3[Co(C2O4)3]
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Solution
Oxidation state = +3,
Coordination number = 6,
3d6 configuration = \[\ce{t^6_{2g}e^0_g}\]
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| A. \[\ce{[Co(NH3)6]^{3+}}\] | 1. Violet |
| B. \[\ce{[Ti(H2O)6]^{3+}}\] | 2. Green |
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| 5. Blue |
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