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प्रश्न
What is the coordination entity formed when excess of liquid ammonia is added to an aqueous solution of copper sulphate?
उत्तर
When excess of liquid ammonia is added to an aqueous solution of copper sulphate to give tetraamminecopper (II) sulphate
\[\ce{\underset{\text{(Copper sulphate)}}{CuSO4} + \underset{\text{(Ammonia)}}{4NH3} -> \underset{\text{(tetraamminecopper (II) sulphate)}}{[Cu(NH3)4]SO4}}\]
Therefore, the coordination entity is \[\ce{[Cu(NH3)4]^2+}\]
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