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What are lanthanoids (or lanthanides)? OR What is the lanthanoid series?

Answer»
  • Lanthanoids or Lanthanoid series or Lanthanones :  The series of fourteen elements from 58Ce to 71Lu in which a differentiating electron enters 4f subshell and follows lanthanum is called lanthanoid series and the elements are called lanthanoids.
  • They have general electronic configuration, [Xe] 4f1-14 ,5d0-1, 6s2.
  • They follow Lanthanum (Z = 57) in 3d-series.


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