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Ionic radii are...

Ionic radii are

A

inversely proportional to effective nuclear charge

B

inversely proportional to square of effective nuclear charge

C

directly proptional to effective nuclear charge

D

directly proportional to sqaure of effect nuclear charge

Text Solution

Verified by Experts

The correct Answer is:
A
`"Ionic radii"prop (1)/(Z_("eff"))`
` Z_("eff") to "effective nuclear charge"`
Thus `Z_("eff")` is calculated as follows:
`Z_("eff") = Z- " screenig constant" (sigma)`
This value of screening constant is based upon the number of electrons in valence shell as well as in penultimate shells.
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