Atomic structure refers to the arrangement and organization of subatomic particles within an atom, including protons, neutrons, and electrons.
Electron Configuration: The distribution of electrons among various energy levels or orbitals within an atom.
Ionization Energy: The amount of energy required to remove an electron from an atom or ion.
Valence Electrons: Electrons located in the outermost energy level (valence shell) of an atom that participate in chemical bonding.