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What are inner - transition elements ? Decide which of the given atomic numbers are the number of the inner transition elements:29, 59, 74,95, 102, 104.

Answer»

Solution :The f-block ELEMENTS , i.e., in which the last ELECTRON enters into f-subshells are called inner - transition elements. These INCLUDE lanthanoids ( 58- 71) and actinoids ( 90 - 103) . Thus, elements with atomic numbers 59 , 95 and 102are inner transition elements.


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