Lanthanide contraction means: - Vidyadip

MCQ

Lanthanide contraction means:

A
Contraction of atoms of elements after lanthanum due to poor shielding of the $f$-subshell electron.
B
Contraction of atoms of elements before lanthanum due to poor shielding of the f subshell electron.
C
Contraction of an atom of lanthanum element due to poor shielding d-subshell electron.
D
Contraction of an atom of lanthanum element due to high shielding of the d-subshell electron.

✓

Answer

A. Contraction of atoms of elements after lanthanum due to poor shielding of the $f$-subshell electron.
Explanation:
Contraction of atoms of elements after lanthanum due to poor shielding of the f-subshell electron.

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