Identify the correct order of the ionic size | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) All the given species ($Ca^{2+}$,$K^{+}$,$Ar$,$Cl^{-}$,$S^{2-}$) are isoelectronic,meaning they all contain $18$ electrons.For isoelectronic speci

Vedclass · Accepted Answer

$Ca^{2+} < K^{+} < Ar < Cl^{-} < S^{2-}$

Vedclass · Answer

(A) All the given species ($Ca^{2+}$,$K^{+}$,$Ar$,$Cl^{-}$,$S^{2-}$) are isoelectronic,meaning they all contain $18$ electrons.For isoelectronic species,the ionic radius decreases as the nuclear charge (atomic number,$Z$) increases.The atomic numbers are: $Ca$ $(Z=20)$,$K$ $(Z=19)$,$Ar$ $(Z=18)$,$Cl$ $(Z=17)$,$S$ $(Z=16)$.Since the nuclear charge follows the order $Ca^{2+} > K^{+} > Ar > Cl^{-} > S^{2-}$,the ionic size follows the inverse order:$Ca^{2+} < K^{+} < Ar < Cl^{-} < S^{2-}$.

Identify the correct order of the ionic size for the following isoelectronic species:

Similar Questions

The ionic radii of $F^{-}$ and $O^{2-}$ respectively are $1.33 \ \mathring{A}$ and $1.40 \ \mathring{A}$,while the covalent radius of $N$ is $0.74 \ \mathring{A}$. The correct statement for the ionic radius of $N^{3-}$ from the following is:

Among the elements $Li$,$N$,$C$ and $Be$,the one with the largest atomic radius is

What is the method to estimate the volume of an individual atom?

Which of the following has the largest ionic radius?

The unit representing atomic radii and ionic radii is

Vedclass Test Series

Exam Paper Generator

Online Exam Module