"The way in which electrons are distributed among the various orbitals is called the *electron configuration." *

*
* "Orbitals are filled in order of increasing energy, with no more than two electrons
per orbital."

"The electron configuration of an atom is a form of notation which shows how the
electrons are distributed among the various atomic orbital and energy levels. The format consists of a series of numbers,
letters and superscripts."

"The number of sublevels that an energy level can contain is equal to the principle
quantum number of that level."

"An orbital is a space that can be occupied by up to two electrons. Each type
of sublevel holds a different number or orbitals, and therefore, a different number of electrons. s sublevels have one
orbital, which can hold up to two electrons. p sublevels have three orbitals, each of which can hold 2 electrons, for
a total of 6. d sublevels have 5 orbitals, for a possible total of 10 electrons. f sublevels, with 7 orbitals,
can hold up to 14 electrons."

"An easy way to calculate the number of orbitals found in an energy level is to
use the formula n^{2}."

"An easy way to calculate the total number of electrons that
can be held by a given energy level is to use the formula 2n^{2}."