Chemistry - PERIODIC TABLE Question with Solution | TestHub

ChemistryPERIODIC TABLEAtomic Size, ZeffMedium2 minPYQ_2021

ChemistryMediumsingle choice

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

Answer:

Solution:

$\begin{array}{l} P^{3 -} & S^{2 -} & C - & K^{+} & {Ca}^{2 +} \\ Z & 15 & 16 & 17 & 19 & 20 \\ No . of e^{-} & 18 & 18 & 18 & 18 & 18 \end{array}$

For isoelectronic species greater is $Z$ smaller is radius. So correct order

$P^{3 -} > S^{2 -} > {Cl}^{-} > K^{+} > {Ca}^{2 +}$

Stream:JEESubject:ChemistryTopic:PERIODIC TABLESubtopic:Atomic Size, Zeff

⏱ 2mℹ️ Source: PYQ_2021

Loading discussions...