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InterviewSolution
| 1. |
How does electronic configuration of atoms change within a period, with increase in atomic number ? |
| Answer» Solution :On moving ACROSS a PERIOD from left to right , the atomic number of the elements, increases. Therefore, the number of electrons in the VALENCE shell increases from 1 to 8 i.e the first element in the GIVEN period will have one electron in its valence shell and the last element in the same period will have eight eletrons. | |