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am Ch12

periodic table terms

TERM DEFINITION
periodic descibes somthing that occurs or repeats at regular intervals
periodic law the law that staes that the repeting chemical and phisical properties of elements change perodically with the atomic numbers of the elements
period in chemistry,a horizontal row of elements in the periodic table
group a vertical column of elements in the periodic table;elements in a group share chemical properties
alkali metal one of the elements of a group 1 of the periodic table (lithium,sodium,patassium,rubidium,cesium,and francium)
alkali-earth metal one of the elements of group 2 of the periodic table (beryllium,magnesium,calcium,strontium,barium,and radium)
halogen ine of the elements of group 17 of the periodic table (fluorine,chlorine,bromine,iodine,and astatine);halogens combine with most metals to form salts
noble gas one of the elements of group 18 of the periodic table (helium,neon,argon,krypton,xeneon,and randon);noble gases are unreative
Created by: bvblover
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