Lanthanoids are [CBSE PMT 2004]

1.	Lanthanoids are [CBSE PMT 2004]
A.	14 elements in the sixth period (atomic no. = 58 to 71) that are filling 4f sublevel
B.	14 elements in the seventh period (atomic no. = 58 to 71) that are filling 4f sublevel
C.	14 elements in the sixth period (atomic no. = 90 to 103) that are filling 4f sublevel
D.	14 elements in the seventh period (atomic no. = 90 to 103) that are filling 4f sublevel
Answer» B. 14 elements in the seventh period (atomic no. = 58 to 71) that are filling 4f sublevel

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Lanthanoids are [CBSE PMT 2004]

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