Glossary of physical science chp. 7

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a horizontal row in the periodic table, also called a series
electron configuration
the number and position of electrons in the energy levels of an atom
an element that tends to give up electrons in a chemical reaction
another name for a family on the periodic table
valence electrons
the electrons in the outermost energy level of an atom
a substance that has properties of both metals and nonmetals
a vertical column on the periodic table; also called a group
an element that tends to gain electrons in a chemical reaction; a poor conductor of heat and electricity
capable of being hammered or rolled
a homogeneous mixture of metals
shining by reflecting light
transuranium element
an element with an atomic number higher than that of uranium
alkali metals
Group 1 (IA) elements that each have one valence electron
capable of being drawn into wire
noble gases
stable elements found in Group 18 (VIIIA) that have eight valence electrons
transition elements
strong metals in Groups 3-12
(IB through VIIIB)
periodic table
a table of the elements arranged by atomic number into vertical columns called families or groups, and horizontal rows called periods
periodic law
the chemical properties of the elements are periodic functions of their atomic number
reactive elements in Group 17 (VIIA) that have seven valence electrons

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