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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

Californium (Z=98)

C

Uranium ( Z= 92)

D

Terbium (Z=65)

Text Solution

Verified by Experts

The correct Answer is:
D
Elements with atomic numbers `Z=90 -103 are called actinoids. Therefore terbium (Z= 65) is not an actinoid .Thus option ( d) is correct.
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