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The hardest lanthanide element is...

The hardest lanthanide element is

A

Sm

B

La

C

Gd

D

Dy

Text Solution

Verified by Experts

The correct Answer is:
C
Hardest lenthanide element is lutetium `("_(71)Lu)`. But among the given options gadollnium (Gd) is the hardest lanthanoid.
Hardness of few lathanide elements on vicker.s scale is given below.
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