Aufbau Rule and filling of electrons in orbitals and sub shells
Aufbau rule is not on
the name of any scientist as usually happened in sciences. Aufbau means
building up.
Electrons are build
up in orbitals of different subshells of different energy levels on the basis
of energy.
Electrons first fill
lower energy level and then move to next higher level.
So electrons start filling from 1s orbital on wards in the
following sequence:
1s,2s,2p , 3s,3p,4s,3d,4p,5s,4d,5p,6s,4f,5d,6p,7s,5f,6d,7p,8s
Simply it can be learned as ssp sps dps dps fdps fdps
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