Question

Ionic radii are

• A. inversely proportional to effective nuclear charge
• B. inversely proportional to square of effective nuclear charge
• C. directly proportional to effective nuclear charge
• D. directly proportional to square of effective nuclear charge

Answer 1

Answer: (A)

inversely proportional to effective nuclear charge

Answer 2

Ionic radii $?$ , , , , , , , , , Z_{eff} \rightarrow , , , $> effective nuclear charge This$Z_{eff}$is calculated as follows :$Z_{eff}=Z$- screening constant$(\sigma)$ This value of screening constant is based upon the number of electrons in valence shell as well as in penultimate shells.