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23 Cards in this Set
- Front
- Back
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Periodic Law |
The properties of elements recur in a repeating pattern when arranged by increasing atomic number |
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Group |
A vertical columm of elements in the periodic table |
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Period |
A horizontal row of elements in the periodic table |
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Alkali Metals |
The Group IA/1 elements, excluding hydrogen |
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Alkaline Earth Metals |
The group IIA/2 elements |
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Halogens |
The group VIIA/17 elements |
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Noble Gases |
The relatively unreactive Group VIIIA/18 elements |
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Representative Elements |
The Group A (1,2, and 13-18) elements in the periodic table |
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Transition Elements |
The Group B (3-12) elements in the periodic table |
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Lanthanide Series |
The elements with atomic numbers 58-71 |
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Actinide Series |
The elements with atomic numbers 90-103 |
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Inner Transition Elements |
The elements in the lanthanide and actinide series |
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Rare Earth Elements |
The elements with atomic numbers 21, 39, 57, and 58-71 |
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Transuranium Elements |
The elements beyond atomic number 92 |
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Electron Configuration |
A shorthand description of the arrangement of electrons by sublevels according to increasing energy |
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Core Electrons |
The inner electrons in an atom which are not available for bonding |
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Valence Electrons |
The electrons that occupy the outermost s and p sublevels of an atom |
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Electron Dot Formula |
The chemical symbol of an element surrounded bya dot representing each valence electron |
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Ion |
An atom that bears a charge as a result of gaining or losing valence electrons |
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Ionization Energy |
The amount of energy necessary to remove an electron from an atom |
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Ionic Change |
Refers to the positive charge on a metal atom that has lost electrons or to the negative charge on a nonmetal atom that has gained electrons |
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Isoelectronic |
Refers to ions having the same electron configuration; for example Mg 2+ and O2- each have 10 electrons |
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Core Notation |
A method of writing an electron configuration in which core electrons are represented by a noble gas symbol in brackets followed by the valence electrons, for example, [Ne] 3s2 |
