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Term | Definition |
---|---|
periodic table | a chart that organizes info about al of the known elements according to properties |
peirod | horizontal row of elements in the period table |
group | the vertical column on the periodic table |
valence electrons | an electrons that is found in the most outer shell of an atom and that determines the atom`s chemical properties |
reactivity | unable to react chemically under normal |
metalloid | elements that have properties of both metals and nonmetals |
inert | unable to react chemically under normal circumstances |