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Chem Unit three
Term | Definition |
---|---|
Nonpolar covalent | Electrons are shared equally by bonded atoms; balanced charge |
Ionic Bonds | When electrons are transferred between a metal and nonmetal |
covalent bond | when electrons are shared between two non metals |
polar covalent | bonded atoms have an unequal attraction for shared electrons; unbalanced charge |
metallic bond | delocalized electrons move freely among positively charged ions |
polyatomic ion | charged group of covalently bonded atoms |
octet rule | outermost valence shell needs 8 electrons for stablilty |
oxidation number | number assigned to the charge of an ion in buliding compounds |
stock system | uses roman numeral to indicate ion's charge |
electron dot notation | only valence electrons of an element are placed around the element symbol |
Nomenclature | a naming system |
Volatile | readily evaporates into a gas |