The metallic radii are abnormally high for which of the following pairs? · ABC26IN1213
Subject: Inorganic Chemistry · Chapter: Lanthanides and Actinides · Topic: Lanthanides & Actinides – General · Exam: CSIR NET DEC 2015 · Marks: 2 · Difficulty: Easy
The metallic radii are abnormally high for which of the following pairs?
(a)Eu, Yb
(b)Sm, Tm
(c)Gd, Lu
(d)Nd, Ho
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
Eu and Yb contribute only two electrons to the metallic bond (keeping f⁷ and f¹⁴), so their metallic radii are anomalously large.
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