electron structure
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What is aufbau principle
Electrons enter the lowest energy orbital available
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What is hunds rule
Electrons prefer to occupy orbitals on their own, and only pair up when no empty orbitals of the same energy are available
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What are the irregular elements in electronic configuration and why
Chromium (Cr) and copper (Cu), their 4s and 3d levels are very close in energy so they would have Chromium would be ….. 4s1 3d5 rather than …..4s2 3d6
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