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NEETChemistryClassification of Elements and Periodicity in Properties

Which elements are included in the Lanthanoid series?

Options

  1. ACe(Z = 58) – Lu(Z = 71)
  2. BTh(Z = 90) – Lr (Z = 103)
  3. CK(Z = 19) – Kr (Z = 36)
  4. DRb(Z = 37) – Xe (Z = 54)

Correct answer

A. Ce(Z = 58) – Lu(Z = 71)

Step-by-step solution

The Lanthanoid series includes elements from Ce (Z = 58) to Lu (Z = 71).

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