Madelung's Rule

Madelung's Rule - Shielding of the nuclear charge by the...

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Madelung’s Rule I. Energy increases with increasing n + l II. For identical values of n + l , energy increases with increasing n 1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < . .. 1 2 3 3 4 4 5 5 : ( n + l ) Reason:
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Unformatted text preview: Shielding of the nuclear charge by the innermost electrons: Z eff = Z - S ( S- contribution due to screening of nuclear charge by innermost electrons) Orbital penetration: s > p > d >f...
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