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The effective atomic number of \(\mathrm{[Pt(NH_3)_4]^{2+}}\) complex is

Question and options

The effective atomic number of [Pt(NH3)4]2+\mathrm{[Pt(NH_3)_4]^{2+}} complex is
  1. 84
  2. 86
  3. 36
  4. 78

Answer and explanation

Correct answer: A - 84
EAN=Z−oxidation state+2×(number of ligands)=78−2+2×4=84\mathrm{EAN} = Z - \text{oxidation state} + 2 \times (\text{number of ligands}) = 78 - 2 + 2 \times 4 = 84.

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