AtomBlanH

Atom: Made up of a nucleus, proton, neutron, and electron. Proton: Has a positive charge. Electron: Has a negative charge. Neutron: Has the same mass as a proton. Nucleus: The central part of an atom. Atomic Number: How many protons and electrons an element has. Atomic weight: How much mass is in a chemical element. Atomic symbol: The letter of the element. Electronic configuration: Distribution of electrons of an atom or molecule in atomic or molecular orbitals.