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| 1. |
Give the electronic configurations of the elements : ._(19)K, ._(25)Mn, ._(20)Ca |
| Answer» Solution :`._(19)K= 1s^(2) 2s^(2) 2P^(6) 3s^(2) 3p^(6) 4s^(1) : ._(25)Mn=1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 3d^(5) 4s^(2), ._(20)Ca=1s^(2) 2s^(2) 2p^(6) 3s^(2)3p^(6) 4s^(2)` | |