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why 1S2,2S2P6,3S2P6d10,why at last we are cannot take again4S2

why 1S2,2S2P6,3S2P6d10,why at last we are cannot take again4S2

Grade:11

1 Answers

pawan deep
41 Points
10 years ago

3d10 orbital posses more energy than 4s2 orbital ........

therefore 4s2 orbital is filled first and 3d10 afterwards ......(follows aufbau principle , lower energy level fills first)

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