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Electrons are found in orbitals outside the nucleus of an atom.
n=2 has 3 2p orbitals.
Degenerate orbitals are orbitals which have the same energy in an atom.
Half filled orbitals or empty orbitals
3d orbitals do exist and 2d orbitals dont exist because of the pauli exclusion principle which says only 6 electrons can exist in the 2nd shell, and you need at least 7 to get a d subshell
Shells: 3 Orbitals: 9
Into the orbitals.
16 orbitals
Ne has three p-orbitals.
The Aufbau principle states that electrons will fill up the different orbitals in an atom in order, i.e. the s orbitals of an atom will be filled by electrons before the p orbitals.