Similarities between Lanthanides and Actinides preparation and properties, Group 18 d – and f – Block Elements

Similarities between Lanthanides and Actinides preparation and properties, Group 18 d – and f – Block Elements

Similarities between Lanthanides and Actinides :

  • Oxidation state of +3is not common in both the series.
  • In both the series, f-orbitals are being successively filled.
  • As lanthanide contraction, we find actinide contraction because of electrons still passes very ineffective power as compared to 4f-electrons.
  • Because off-transitions, sharp line like bonds are observed in the absorption spectra of the elements of both the series.
  • Beside possessing low electronegativities they are very highly reactive.
  • Nitrates, perchlorates and sulphates of trivalent actinides and also lanthanides are soluble whereas the hydroxide, fluorides and carbonates are not soluble in water.
  • Just like lanthanides actinides show ion exchange behaviour.
  • Due to presence of unpaired electron, the ions of both are paramagnetic.
  • The elements of both the series are highly electro positive hence these elements are chemically highly reactive and behave as strong reducing agent.

Chemistry Notes

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