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Question

The IUPAC name of [Pt(NH3)4(NO2)Cl]SO4 is :

A
tetramminechloronitroplatinum (II) sulphate
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B
tetramminechloronitroplatinum (IV) sulphate
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C
chlorotetramminenitroplatinum (IV) sulphate
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D
chloronitrotetrammineplatinum (IV) sulphate
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Solution

The correct option is B tetramminechloronitroplatinum (IV) sulphate
Given the compound, [Pt(NH3)4(NO2)Cl]SO4.
Here, we know SO4 has 2 charge.
So, the overall charge on Pt(NH3)4(NO2)Cl] is +2. Cl and NO2 has 1 valency each.
Therefore, charge on Pt has to be +4 to balance the overall charge.
Therefore, the IUPAC name of [Pt(NH3)4(NO2)Cl]SO4 is tetramminechloronitroplatinum (IV) sulphate.

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