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What are inner transition elements ? Decide which of the following atomic numbers are the atomic 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 the f-subshell are CALLED inner-transition elements. These include LANTHANOIDS (58-71) and ACTINOIDS (90-103). ACCORDINGLY, elements with atomic numbers 59-95 and 102 are inner transition elements. | |