The correct order of atomic radii is:

Options

A. `Yb^(3+) lt Pm^(3+) lt Ce^(3+) lt la^(3+)`
B. `ce^(3+) lt Yb^(3+) lt Pm^(3+) lt La^(3+)`
C. `Yb^(3+) lt Pm^(3+) lt La^(3+) lt Ce^(3+)`
D. `Pm^(3+) lt La^(3+) lt Ce^(3+) lt Yb^(3+)`

Answer

A