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| the physical and chemical properties of the elements are periodic functions of their atomic numbers. |
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| is an arrangement of the elements in order of their atomic numbers so that elements with similar properies fall n the same column or group |
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| are the 14 elements with atomic numbers from 58 to 71 |
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| are the 14 elements with atomic numbers from 90 to 103 |
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| the elements of group 1 of the periodic table |
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| the elements of group 2 of the periodic table |
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| the d-block elements are metals with typical metallic propeties |
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| the pblock elements together with the s block elements |
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| one-half the distance between the nuclei of identical atoms that are bonded together |
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| an atom or group of bonded atoms that has a positive or negative charge. |
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| any process that results in the formation of an ion |
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| the energy required to remove one electron from a neutral atom of an element |
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| The energy change that occrs when an electron is acquired by a neutral atom |
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| the electrons that are avaliable to be lost or gained, or shared in the formation of chemicl compounds |
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| a measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound |
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