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The hexaaqua complex[Ni(H(2)O)(6)]^(2+) ...

The hexaaqua complex`[Ni(H_(2)O)_(6)]^(2+)` is green, whereas the corresponding ammonia complex `[Ni(NH_(3))_(6)]^(2+)` is violet. Explain.

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To explain why the hexaaqua complex \([Ni(H_2O)_6]^{2+}\) is green while the ammonia complex \([Ni(NH_3)_6]^{2+}\) is violet, we can analyze the electronic transitions and the colors associated with these complexes. ### Step-by-Step Solution: 1. **Identify the oxidation state of Nickel in the complexes**: - In both complexes, Nickel is in the +2 oxidation state. This can be determined from the overall charge of the complexes and the neutral nature of the ligands (water and ammonia). 2. **Determine the electronic configuration of Nickel**: ...
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