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NEET levelSingle correct optionDifficulty 1 of 3df176

Which of the following is an actinoid?

A $Lu$
B $Th$
C $Ce$
D $Hf$

Answer: B

Thorium has Z = 90 and belongs to the

5 f

series.

Ce

and

Lu

are lanthanoids and

Hf

is a 5d transition metal.

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