Rare-earth elements are exhibited by

1.	Rare-earth elements are exhibited by
A.	At. No. 58 to 71
B.	At. No. 21 to 30
C.	At. No. 39 to 71
D.	At. No. 81 to 91
Answer» B. At. No. 21 to 30

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Rare-earth elements are exhibited by

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