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Ce3+, La3+, Pm3+ and Yb3+ have ionic radii in the increasing order as

(a) La3+<Ce3+<Pm3+ <Yb3+

(b) Yb3+<Pm3+<Ce3+< La3+

(c) La3+<Ce3+<Pm3+<Yb3+

(d) Yb3+<Pm3+<La3+<Ce3+

1 Answer

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Best answer

Correct Option(b) Yb3+<Pm3+<Ce3+< La3+

Explanation:

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