Write Some Similarities And Differences Between Lanthanide And Actinide

Lanthanides – These are the elements in which the valence shell contains ‘4f’ electrons. The lanthanide group includes elements from atomic number 57 to atomic number 71. Lanthanum is also considered a lanthanide since its properties closely resemble those of lanthanides.

Actinides – These are the elements in which the valence shell contains ‘5f’ electrons. The actinide group includes elements from atomic number 89 to atomic number 103. Actinium is also considered as an actinide because its properties are similar to those of actinides.

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