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17 Cards in this Set
- Front
- Back
- 3rd side (hint)
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any metal in Group 2A of the periodic table
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alkali metals
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any metal in Group 2A of the periodic table
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alkaline earth metals
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any atom or group of atoms with a negative charge
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anion
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one-half the distance between the nuclei of two atoms of the same element when the atoms are joined; increases from top to bottom within a group and decreases from left to right across a period.
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atomic radius
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any atom or group of atoms with a positive charge
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cation
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the ability of an atom to attract electrons when the atom is in a compound; fluorine has the highest. Decreases from top to bottom within a group and increases from left to right in a period.
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electronegativity
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nonmetals in Group 7A of the periodic table
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halogens
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an element in the lanthanide or actinide series; the highest occupied s sublevel and nearby f sublevel of its atoms generally contain electrons
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inner transition metal
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an atom or group of atoms that has a positive or negative charge
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ion
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the energy required to remove an electron from an atom in its gaseous state. Tends to decrease from top to bottom within a group and to increase from left to right across a period.
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ionization energy (IE)
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elements that tend to have properties that are similar to those of metals and nonmetals
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metalloids
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a class of elements that are good conductors of heat and electric current; these tend to be ductile, malleable and shiny
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metals
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an element in Group 8A of the periodic table; the s and p sublevels of the highest occupied energy level are filled
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noble gas
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Helium is one of these, but it is exempt from the rules stated here since it only has two electrons.
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an element that tends to be a poor conductor of heat and electric current; generally has properties opposite to those of metals
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nonmetal
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when the elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties
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periodic law
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an element in the A group in the periodic table; as a group these elements display a wide range of physical and chemical properties. In their atoms, the s and p sublevels in the highest occupied energy level are partially filled
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representative element
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one of the Group B elements in which the highest occupied s sublevel and a nearby d sublevel generally contain electrons
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transition metal
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