How electrons occupy orbitals An orbital is a probability distribution map showing where the electron is likely to be found Each orbital is specify by three connected quantum numbers n the principal quantum number l angular momentum number and ml the magnetic quantum number To find the total number of orbital you apply the formula n 2 For example n 5 it exists 25 orbitals how do we write a set of quantum numbers n represents the level of energy of the atom It can take value like 1 2 3 4 5 6 l indicates the sublevel Its value depends on n if n 4 the possible value of l are 3 2 1 0 because n 1 3 From 3 we add the other value Each value of l has a designed letter L 0 s L 1 p L 2 d L 3 f ml values depend on l but it is range between l l for example n 3 l 2 1 0 ml 2 1 0 1 2 l 2
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