D-And F-Block Elements Ques 350

Question: Rare-earth elements are exhibited by

Options:

A) At. No. 58 to 71

B) At. No. 21 to 30

C) At. No. 39 to 71

D) At. No. 81 to 91

Show Answer

Answer:

Correct Answer: A

Solution:

Atomic no.58 to 71,Lanthanides, are rare earth metals.



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