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18 Cards in this Set
- Front
- Back
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periodic law
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physical and chemical properties of elements are periodic functions of their atomic numbers
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periodic table
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arrangment of elemnts in order of their atomic #'s so tht elements w/ similar properties fall in same grp.
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lanthanides
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14 elements w/ atomic #'s from 58 (Ce) to 71 (Lu)
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actinides
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14 elements w/ atomic #'s from 90 to 103
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alkali metals
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elements of grp 1 of periodic tbl
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alkaline-earth metals
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elements of grp 2 of the periodic tbl
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transition elements
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d-block elements tht are metals w/ typical metallic properties
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main-group elements
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p-block elements together w/ the s-block elements
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halogens
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elements of grp 17
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atomic radius
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1/2 distance btwn nuclei of identical atoms tht are bonded together
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ion
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atom or grp of bonded atoms tht has a (+) or (-) charge
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ionization
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any process tht results in formation of an ion
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ionization energy
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energy required to remove one electron from a neutral atom of an element
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electron affinity
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energy change tht occurs when an electron is acquired by a neutral atom
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cation
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positive ion
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anion
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negative ion
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valence electrons
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electrons available to be lost, gained, or shared in formation of chemical compounds
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electronegativity
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measure of ability of an atom in a chemical compound to attract electrons frm anthr atom in the compound
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