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Question

In which of the following are the chemical formula and the name correctly matched?


A

K[Pt(NH3)Cl5] – potassium amminepentachloroplatinate (IV)

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B

[Ag(CN2)] − dicyanoargentate (I) ion

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C

K3[Cr(C2O4)3] – potassium trioxalatochromate (III)

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D

Na2[Ni(EDTA)] – Sodium ethylenediaminetetra-acetonickel (I)

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Solution

The correct options are
A

K[Pt(NH3)Cl5] – potassium amminepentachloroplatinate (IV)


B

[Ag(CN2)] − dicyanoargentate (I) ion


C

K3[Cr(C2O4)3] – potassium trioxalatochromate (III)


The coordination spheres correspond to anions and so the names should be suffixed with "ate." Next, we will have to calculate the oxidation states of the central metal ion. Chromium is in +3 oxidation state, silver in +1 oxidation state, and platinum is in +4 oxidation state.


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