modern chemistry chap 5
About this set
Created by:
scfreda on November 2, 2009
Classes:
modern chemistry, Flake, Modern Chemistry
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18 terms
Terms | Definitions |
|---|---|
 actinide | 14 elements with atomic numbers from 90 to 103 |
| lanthanide | the 14 element with atomic numbers from 58 to 71 |
| periodic law | physical and chemical properties of the elements are periodic functions of their atomic numbers |
| alkali metals | group 1 elements |
| alkaline-earth metals | group 2 elements |
| halogens | group 17 of the periodic table |
| main-group/representative elements | the p-block elements together with the s-block elements. |
| atomic radii | one-half the distance between the nuclei of identical atoms that are bonded together |
| ion | an atom or group of bonded atoms that has a positive or negative charge |
| ionization | any process that results in the formation of an ion |
| ionization energy | the energy required to remove one electron from a neutral atom of an element |
| electron affinity | the energy change that occurs when an electron is acquired by a neutral atom |
| cation | a positive ion |
| anion | a negative ion |
| valence electrons | electrons available to be lost, gained, or shared in the formation of chemical compounds |
| electronegativity | the measure of the ability of an atom in a chemical compound to attract electrons |
| periodic table | an arrangement of the elements in order of their atomic numbers so that elements with smiliar properties fall in the same column, or group. |
| transistion elements | d block elements with typical metal properties |
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