2.2: Atomic Structure - Chemistry LibreTexts
https://chem.libretexts.org/Courses/Brevard_College/CHE_103_Principles_of_Chemistry_I/02%3A_Atoms_and_Molecules/2.02%3A_Atomic_Structure
WEBMay 18, 2021 · Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms. Atoms themselves are composed of protons, neutrons, and electrons. Each element has its own atomic number, which is equal to the number of protons in its nucleus. Isotopes of an element contain different numbers of neutrons.
DA: 25 PA: 76 MOZ Rank: 33