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What are inner-transition elements ? Decide which of the following atomic numbers are the numbers 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-subshell are CALLED inner-transistion elements. These INCLUDE lanthanoids (58 - 71) and actinoids (90 - 103). THUS, elements with ATOMIC numbers 59, 95 and 102 are inner - transition elements. | |