Quantum Numbers

Quantum numbers describe the state of electrons in an atom. Learn about the principal quantum number, orbital quantum number, magnetic quantum number, and spin quantum number in this interactive tutorial. Continue reading

Atom Model

An atom is the smallest particle of an element that contains the chemical properties of that element. Learn about atoms and their components (protons, neutrons, and electrons) in this program. Continue reading

Electron Orbitals

Electron configuration in an atom is organized into orbitals and differently shaped subshells. Learn about the s subshell, p subshell, d subshell, and f subshell (and more) in this interactive tour. Continue reading