The correct basicity order of the following lanthanide ions is -

Options

A. `La^(3+) gt Lu^(3+) gt Ce^(3+) gt Eu^(3+)`
B. `Ce^(3+) gt Lu^(3+) gt Eu^(3+)`
C. `Lu^(3+) gt Ce^(3+) gt Eu^(3+) gt La^(3+)`
D. `La^(3+) gt Ce^(3+) gt Eu^(3+) gt Lu^(3+)`

Answer

D

Explanation

Many of the trivalent lanthanoid ions are coloured both in the solid state as well as in solution.