What is afbau principle?
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It states that, hypothetically, electrons orbiting one or more atoms fill the lowest available energy levels before filling higher levels........
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Afbau principal :-)
according to it electrons comes first to that orbital which have lower energy.
to calculate energy level of different orbitals we should use bohr-bury rule.:-
(n+l ) rule : subshell which has lowest value of n + l has lower energy.
n rule: when value of
n +l will be same for two different subshell then we should use n Rule
according to it orbital which have less value of n has less energy
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