Home Chemistry D and F - Block Elements General Lanthanide contraction is caused due to
Chemistry D and F - Block Elements General Single Correct MCQ
Published on: August 13, 2026

Lanthanide contraction is caused due to

A
the appreciable shielding on outer electrons by 4f electrons from the nuclear charge
B
the appreciable shielding on outer electrons by 5d electrons from the nuclear charge
C
the same effective nuclear charge from Ce to Lu.
D
the imperfect shielding on outer electrons by 4f electrons from the nuclear charge

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The correct answer is:
D

4f electrons does imperfect shielding on outer electrons there fore effective nuclear charge increase

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