"The correct order of ionic radii for the ions, P3$-$, S2$-$, Ca2+, K+, Cl$-$ is :"

Easy MCQ +4 / -1 PYQ · JEE Mains 2021

The correct order of ionic radii for the ions, P^3$-$, S^2$-$, Ca²⁺, K⁺, Cl^$-$ is :

A P3$-$ > S2$-$ > Cl$-$ > K+ > Ca2+ Correct answer
B Cl$-$ > S2$-$ > P3$-$ > Ca2+ > K+
C P3$-$ > S2$-$ > Cl$-$ > Ca2+ > K+
D K+ > Ca2+ > P3$-$ > S2$-$ > Cl$-$

Solution

P3$-$ > S2$-$ > Cl$-$ > K+ > Ca2+ (Correct order of ionic radii) all the given species are isoelectronic species. In isoelectronic species size increases with increase of negative charge and size decreases with increase in positive charge.

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Subject: Chemistry · Chapter: Periodic Table and Periodicity · Topic: Periodic Trends

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The correct order of ionic radii for the ions, P3$-$, S2$-$, Ca2+, K+, Cl$-$ is :

Solution

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The correct order of ionic radii for the ions, P^3$-$, S^2$-$, Ca²⁺, K⁺, Cl^$-$ is :