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CBSE Class 12-science Answered

Obseved configuration
Asked by | 10 Jul, 2008, 03:50: PM
answered-by-expert Expert Answer

With the increase in no. of electrons in 4f shell,its energy decreases.therefore,the incoming electrons and the electron of 5d shell go on occupying 4f shell till we have Yb 4f14 6s2.at this stage 4f become completely filled,so thein Lu the differentiating electron enters in 5d shell

Answered by | 11 Jul, 2008, 09:51: AM
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