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Which of the following is not an actinoi...

Which of the following is not an actinoid?

A

Curium (Z = 96)

B

Calfornium (Z = 98)

C

Uranium (Z = 92)

D

Terbium (Z = 65)

Text Solution

Verified by Experts

The correct Answer is:
D
Elements with atomic number Z = 90 to 103 are called actinoids. Thus, terbium (Z = 65) is not an actinoid. Terbium belong to lanthanoids.
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