Atomic Particles Particle Charge Mass # Location Electron -1

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Atomic Particles Particle Charge Mass # Location Electron -1 Electron cloud Proton +1 1 Nucleus Neutron

Atom with the Electron Cloud Electrons are not in set Orbitals.

Nuclear Forces

Atomic Number Atomic number (Z) of an element is the number of protons in the nucleus of each atom of that element. Element # of protons Atomic # (Z) Carbon 6 Phosphorus 15 Gold 79

Mass Number Mass # = p+ + n0 Mass number is the number of protons and neutrons in the nucleus of an isotope. Mass # = p+ + n0 Nuclide p+ n0 e- Mass # Oxygen - 10 - 33 42 - 31 15 18 8 8 18 Arsenic 75 33 75 Phosphorus 16 15 31

Isotope and Hyphen notation

Isotope and Nuclear notation

Calculating Average Atomic Mass