Orbitals

• Shell = n represents the number of electrons in an orbital.
• S Orbitals have a shape of a sphere and contain 1 or 2 electrons.
• Each shell from n=1 contains one s-orbital.
• The more shells, the greater the radius of s orbitals.
• P- Orbitals have a shape of a dumbbell and contain 1 or 2 electrons.
• Each shell from n=2 contains 3 p-orbitals.
• Overall, there are 6 electrons in P-orbitals.
• The greater the n, the further a p-orbital is from the nucleus.
• From n=3, each shell contains 5 d-orbitals.
• From n=4, each shell contains 7 f-orbitals.
• When 4s is empty, it is a lower energy level than 3d.
• The highest energy level of the 3rd shell overlaps with the lowest energy level of the 4th shell.
• 4s fills before 3d sub-shell.