The range of atomic numbers of lanthanide series of elements is:

90 - 103

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89 - 102

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58 - 71

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71 - 103

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Solution

The correct option is C $58 - 71$
Lanthanum has atomic number $57$ . Lanthanoids start from next element with atomic number $58$ (cerium). The atomic number of last element could be $57 + 14 = 71$ (Lutetium).

Option C is correct.

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