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Explain in brief about the f-block elements.

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  • The elements present in f-block are all metals and are placed in the two rows called lanthanide series (58Ce to 71Lu) and actinide series (90Th to 103Lr).
  • The lanthanides are also known as rare earth elements while the actinide elements beyond 92U are called transuranium elements.
  • All the transuranium elements are manmade and radioactive.
  • The last electron of the elements of these series is filled in the (n-2)f subshell, and therefore, these are called inner transition elements.
  • These elements have very similar properties within each series.

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