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How many of the following do not belong to Lanthanoids?  Eu, Er, Lu, Cm, Yb, Tb  (1) 5  (2) 4  (3) 3  (4) 1

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How many of the following do not belong to Lanthanoids? 

Eu, Er, Lu, Cm, Yb, Tb 

(1) 5 

(2) 4 

(3) 3 

(4) 1

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1 Answer

+1 vote
by (46.6k points)

Correct answer is:  (4) 1

63Eu, 65Tb, 68Er, 70Yb and 71Lu belong to Lanthanoids. 

96Cm belongs to actinoids.

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