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Chap 5 chem vocab

The periodic table

TermDefinition
Periodic law the physical and chemical properties of the elements in order of their atomic numbers
Periodic table an arrangement of elements in order of their atomic numbers so that elements in order of their atomic numbers so that elements with similar properties fall in the same column or group
Lathanides group 14 elements from 48 to 71
actinides 14 elements from 90-103
Alkali Metals group 1 (lithium, sodium, potassium, rubium, censium and francium)
Transition elements d-block elements, metals with typical metallic properties
main group elements p-block elements together with the s-block p-block
Periodicity Repeating properties of elements
noble gases group 18
Periods rows in the periodic table, determined by the number of electrons that can occupy the sublevels being filled in that period
Blocks there are 4 blocks on the periodic table s,p,d,and f blocks, determined whether s,p,d, or f is being filled by successive elements of that block
main-group elements the p-block elements together with the s-block elements
halogens group 17, 7 valence electrons
Alkaline-earth metals group 2
valence electrons electrons available to be lost, gained, or shared in the formation of compounds
atomic radius one-half the distance between the nuclei of idnetical atoms that are bonded together
Electronegativity The measure of the ability of an atom in a chemical compound to attract electrons from another atom
Created by: sofiale1206