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unit six

madalyn's chem review

unit six
periodic law when elements are arranged in order of insreasing atomic number, there is a periodic repetition of their physical and chemical properties
metals high luster,good conductors of heat and electricity, can reflect light b/c of luster/ sheen, solid at room temp. except for mercury(Hg), malleable and ductile
nonmetals poor conductors of heat and electric current. Carbon =exception, solid nonmetals brittle(break when hit w/ hammer)
metalliod properties similar to both metals and nonmetals. may behave like either depending on condition
alkali metals group 1A see periodic table
alkaline earth metals group 2A see periodic table
halogens non metals group 7A see peiodic table
nobel gasses stable rarely take part in a reaction also called inert gasses group 8A see periodic table
representative elements groups 1A-7A disply wide range of physical and chemical properties
transition metal metals in which th highest occupied s and nearby d orbitals contain electrons
inner transition metals the highest occupied s sublevel and nearby f sublevel generally contain electons
atomic radius half the distance between the nuclei of two atoms of the same element when the atoms are joined
ion atom or group of atoms that have a positive or negative charge
cation ion with a positive charge
anion a ion with a negative charge
ionization energy energy required to remove an electron from an atom
electronegativity the ability of an atom of an element to attract electrons when the atom is in a compound
Created by: madbee010