Lewis dot diagrams are visual representations used in chemistry to show how valence electrons are arranged among atoms in a molecule.
Valence electrons are the outermost electrons of an atom and participate in chemical bonding.
Electron configuration refers to the distribution of electrons of an atom or molecule in atomic or molecular orbitals.
The octet rule states that atoms tend to form bonds until they have eight electrons in their outermost shell, achieving stability similar to noble gases.