smallest piece of matter that retains the property of the element
number of proteins in an atom's nucleus
Average Atomic Mass
weighted-average mass of the mixture of an element's isotopes
negatively charged particles surrounding the center of an atom
area around the nucleus of an atom where the atom's electrons are most likely to be found
Electron Dot Diagram
uses the symbol for an element and dots representing the number of electrons in the element's outer energy level
positively charged particle,composed of quarks,inside the nucleus of an atom
positively charged center of an atom that contains protons ans neutrons and is surrounded by a cloud of electrons
atoms of the same element that have different numbers of neutrons
sum of the number of protons and neutrons in an atom's nucleus
neutral particle, composed of quarks,inside the nucleus of an atom
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