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19 Cards in this Set
- Front
- Back
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Periodic law |
The physical and chemical properties of the elements are periodic functions of their atomic numbers |
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Periodic Table |
An arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column or group |
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Lanthanides |
The 14 elements with atomic numbers from 58 to 71 |
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Actinides |
The 14 elements with atomic numbers from 90 to 103 |
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Periods |
Horizontally organized rows |
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Alkali metals |
The elements in group one of the periodic table |
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Alkaline-earth metals |
The elements in group 2 of the periodic table |
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Transition elements |
D-block metals |
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Main-group elements |
The p-block elements with the s-block elements together |
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Halogens |
The elements of group 17 |
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Atomic radius |
Defined as half the distance between the nuclei of identical atoms that are bonded together |
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Ion |
An atom that has a positive or negative charge |
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Ionization |
Any process that results in the formation of an ion |
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Ionization energy |
The energy required to remove one electron from a neutral atom of an element |
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Electron affinity |
The energy change that occurs when an electron is acquired by a neutral atom |
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Cation |
A positive ion |
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Anion |
A negative ion |
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Valence electrons |
The electrons available to be lost gained or shared in the formation of chemical compounds |
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Electronegativity |
A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound |
