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InterviewSolution
| 1. |
On what basis is Potassium (Z = 19) placed in4th period and group 1? |
| Answer» Solution :The electronic configuration of potassium is (2, 8, 8, 1) . It has four shells so it belongs to the PERIOD 4 . The period 4 has elements with the 4th shell being filled. Potassium has 1 ELECTRON in its valence shell. HENCE, it is placed in group 1. Group 1 has elements with 1 electron in the valence shell. | |