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Question
Identify the correct decreasing order of ionic radii of lanthanoids.
Options
Sm > Gd > Ce > Pm
Ce > Pm > Sm > Gd
Pm > Sm> Ce > Gd
Gd > Pm > Ce > Sm
MCQ
Solution
Ce > Pm > Sm > Gd
Explanation:
Along with the lanthanoid series, there is a decrease in ionic radii.
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Properties of Lanthanoids
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