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the electrons that are in the outermost (highest) energy level and are held the most losely
electron dot diagram
shows the number of valence (outermost) electrons in an atom; consists of a chemical symbol surrounded by dots
force of attraction that holds two atoms together as a result of the rearrangement of electrons between them
a compound that consists of positive and negative ions held together by their attraction for one another
a number written behind a chemical symbol that tells you the ratio of elements in a compound
a mixture of two or more elements that has the properties of a metal; one of the combined elements MUST be a metal
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