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The lanthanide contraction refers to:...

The lanthanide contraction refers to:

A

radius of the series

B

valence electrons of the series.

C

the density of the series

D

electronegativity of the series.

Text Solution

Verified by Experts

The correct Answer is:
A
Due to `4f`-orbital electrons (poor shielding effect), there is increase in effective nuclear charge which leads to the contraction of the size of atoms. This is called lanthanide contraction.
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