Home Chemistry D and F - Block Elements The Actinoids Which of the following is not an actinide?
Chemistry D and F - Block Elements The Actinoids Single Correct MCQ
Published on: August 13, 2026

Which of the following is not an actinide?

A
Curium
B
Californium
C
Uranium
D
Terbium

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Verified by Experts
The correct answer is:
D

Among the given options, Terbium belongs to 4 f - series with electronic configuration , hence Terbium is lanthanide. However, rest other members belong to 5f-series (actinides).

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