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Atoms and P Table

TermDefinition
atom the smallest particle of an element that still retains the properties of the element
electron particle with an electric charge of -1, surrounds the nucleus of an atom
electron cloud area around the nucleus of an atom where the atom's electrons are most likely to be found
neutron electrically neutral particle inside the nucleus of an atom
nucleus the small, positively charged center of an atom, contains protons and neutrons.
proton particle in the nucleus with an electric charge of +1
quark particle of matter that makes up protons and neutrons
atomic number number of proton in an atom's nucleus
average atomic mass weighted average mass of an element's isotopes according to their natural abundance
isotope atom of an element that has a specific number of neutrons
mass number sum of the number of protons and neutrons in an atom's nucleus
valence electrons the number of electrons in the outermost energy level of an atom.
group vertical column in the periodic table
period horizontal row in the periodic table.
Created by: PRO Teacher jhaase