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Which of the following elements is not a...

Which of the following elements is not an actinide?

A

Curium

B

Californium

C

Uranium

D

Terbium

Text Solution

Verified by Experts

The correct Answer is:
D

Terbium, `Tb(Z = 65)`, is a lanthanoid. Curium `(Cm)`. Californium `(Cf)`, and uranium `(U)` are actinoids.
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