The correct order of ionic radii `Y^(3+)` , `La^(3+)` , `Eu^(3+)` and `Lu^(3+)` is `(AT. No : Y = 39, La = 57, Eu = 63, Lu = 71)`

Options

A. `Y^(3+)lt La^(3+)lt Eu^(3+)lt Lu^(3+)`
B. `Y^(3+)lt Lu^(3+)lt Eu^(3+)lt La^(3+)`
C. `Lu^(3+)lt Eu^(3+)lt La^(3+)lt Y^(3+)`
D. `La^(3+)lt Eu^(3+)lt Lu^(3+)lt Y^(3+)`

Answer

C