NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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The radius of

\mathrm{L}{\mathrm{a}^{3 + }}

(Atomic number of La = 57) is 1.06 Å. Which one of the following given values will be closest to the radius of

\mathrm{L}{\mathrm{u}^{3 + }}

?
(Atomic number of Lu=71)

View answer and explanation

Correct option: D

0.85 Å

Option D (0.85 Å) is correct because, due to lanthanide contraction, the ionic radii decrease across the lanthanide series.

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