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| the phys/chem properties of the elements are periodic by their atomic #s |
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- arrangement of the elements in order of their atomic #
- elements w/ similar properties fall in the same column/ group
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| the 14 elements w/ atomic # from 90(Th) to 103(Lr) |
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| the 14 elements w/ atomic #s from 58(Ce) to 71(Lu) |
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d block
metals w/ typical metallic properties |
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| p block & s block elements |
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group 17
flourine, chlorine, bromine, iodine, astatine |
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| 1/2 distance between the nuclei of identical atoms that are bonded together |
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atom/ group of bonded atoms
pos/ neg charge |
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| any process that results in the formation of an ion |
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| the energy required to remove an e- from an atom/ ion |
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Definition
| energy needed to remove an e- from a neg. ion to form a neutral atom/ molecule |
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electron found in the outermost shell of an atom
determines atom's chem. properties |
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a measure of the ability of an atom in a chem. compound
to attract e- |
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