The lanthanide contraction relates to

MCQ

A
Atomic radii
✓
Atomic as well as ${M^{3 + }}$ radii
C
Valence electrons
D
Oxidation states

✓

Answer

Correct option: B.

Atomic as well as ${M^{3 + }}$ radii

b
(b)The lanthanide contraction relates to atomic as well as ${M^{3 + }}$ radii in which the regular decrease in the size of lanthanoid ion from $L{a^{3 + }}$ to $L{u^{3 + }}$are found.

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