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Question

In the ions P3−,S2− and Cl− the increasing order of size is:

A
Cl<S2<P3
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B
P3<S2<Cl
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C
S2<Cl<P3
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D
S2<P3<Cl
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Solution

The correct option is A Cl<S2<P3
Given ions are isoelectronic, So the relation between size can be determined by z/e ratio.
P3>S2>Cl Increasing z/e ratio
So, order of size will be Cl<S2<P3
Option A is correct.

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