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Lanthanoids are...

Lanthanoids are

A

14 elements in the sixth period (atomic no= 90 to 103 ) that are filling 4f- sublevel

B

14 elements in the seventh period ( atomic no= 90 to 103 ) that are filling 5f-sublevel

C

14 element in the sixth period ( atomic no = 58 to 71 ) that are filling 4f- sublevel

D

14 elements in the seventh period ( atomic no = 58 to 71 ) that are filling 4f- sublevel

Text Solution

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The correct Answer is:
C
NA
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