Which of the following is not an actinoi...

Which of the following is not an actinoid ?

A

Curium (Z = 96)

B

Californium (Z = 98)

C

Uranium (Z = 92)

D

Terbium (Z = 65)

Verified by Experts

The correct Answer is:

D

Elements with atomic number, (Z = 90) to 103 are called actinides. Thus, terbium (Z = 65) is not an actinoid. Terbium belongs to lanthanides.

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