The lanthanide contraction relates to

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The lanthanide contraction relates to

Posted by Lokesh Ak 7 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 6 months ago

The lanthanide contraction is the greater-than-expected decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, which results in smaller than otherwise expected ionic radii for the subsequent elements starting with 72, hafnium. The Lanthanide Contraction is caused by a poor shielding effect of the 4f electrons. Gd because as atomic number increases, the atomic radius decreases. Yb because it has a larger atomic number.

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