Why `Zn^(2+)` salts are white while `Ni^(2+)` salts are blue
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AI Generated Solution
To understand why `Zn^(2+)` salts are white while `Ni^(2+)` salts are blue, we need to analyze the electronic configurations of both zinc and nickel, particularly in their +2 oxidation states.
### Step-by-Step Solution:
1. **Identify the Electronic Configuration of Zinc and Nickel:**
- Zinc (Zn) has an atomic number of 30. Its electronic configuration is:
\[
\text{Zn: } [\text{Ar}] 4s^2 3d^{10}
...
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