a
S\(^{2-}\)
a
K\(^{+}\)
b
CI\(^{-}\)
d
Ca\(^{2+}\)
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stancovick49
4 years ago
Which of the following species has the largest ionic radius
A. S2−
A. K+
B. CI−
D. Ca2+
First of all Observe that they are Isoelectronic
;so the Electron Repulsion Effect is the Same For all.Electron Repel each other on Each She'll,and causes increased Atomic Radius.
Now it's important that u know that Cations have smaller ionic radii than their neutral atoms. In contrast, anions have bigger ionic radii than their corresponding neutral atoms.
Lastly to easily Get your answer,locate the Specie with the Least number of protons ie S2-, as those with Greater number of Protons would attract electrons more and hv Decreased ionic Radius.
