Home Chemistry Co-ordinatios Compounds NEET Previous Year Question When AgNO 3 is added to a solution of Co(NH …
Chemistry Co-ordinatios Compounds NEET Previous Year Question Single Correct MCQ
Published on: August 13, 2026

When AgNO 3 is added to a solution of Co(NH 3 ) 5 Cl 3 , the precipitate of AgCl shows two ionizable chloride ions. This means :

A
Two chlorine atoms satisfy primary valency and one secondary valency
B
One chlorine atom satisfies primary as well as secondary valency
C
Three chlorine atoms satisfy secondary valency
D
Three chlorine atoms satisfy secondary valency

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The correct answer is:
A

As one mole of the complex gives two moles of AgCl this means that the complex has two ionisable Cr ions in one molecule. Thus, two ions satisfy primary valency while third ion satisfy secondary valency.

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