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14 Cards in this Set
- Front
- Back
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the electrons in the outermost energy level of an atom
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valence electrons
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Group 1 (1A) elements that have one valence electron
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alkali metals
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Group 2 (IIA) elements that each have two valence electrons
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alkaline-earth metals
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reactive elements in Group 17 (VIIA) that have seven valence electrons
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halogens
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a table of the elements arranged by atomic number into vertical columns called families or groups, and horizontal rows called periods
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periodic table
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a homogeneous mixture of metals
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alloy
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the number and position of electrons in the energy levels of an atom
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electron configuration
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a vertical column on the periodic table
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family (group)
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The chemical properties of the elements are periodic functions of their atomic numbers.
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Periodic Law
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a horizontal row in the periodic table
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period (series)
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another name for a period in the periodic table
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series
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stable elements found in Group 18 (VIIIA) that have eight valence electrons
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noble gases
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capable of being drawn into wire
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ductile
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another name for a family on the periodic table
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group
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