Define aufbau principle .which of the following orbits are possible 1p

1.	Define aufbau principle .which of the following orbits are possible 1p,2s,2p,and 3f
Answer» 2s and 2p are possible<br>A/c to aufbau principle electrons are filled in subshell a/c to increasing order of energy<br>2s then 2p are possible among them1p and 3f does not exist..<br>According to this principle, in different subshell of an atom elctrons are filled in increasing order of their energy that is subshell of lower energy is filled first<br>according to aufbau principle electron fill orbitals starting at the lowest available energy levels before the filling of higher levels....<br>Possible orbits is 1p.....if I m wrong then correct me....but I think its correct.

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