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Chemistry
Unit 3
Term | Definition |
---|---|
Nonpolar Covalent | Electrons are shared equally by bonded atoms; balanced charge |
Ionic Bond | When electrons are transferred between a metal and nonmetal |
Covalent Bond | When electrons are shared between 2 nonmetals |
Polar Covalent | Bonded atoms have an unequal attraction for shared electrons; unbalanced charge |
Metallic Bond | Electrons move freely among positively charged ions |
Polyatomic Ion | Charged group of covalently bonded atoms |
Octet Rule | Outermost valence shell needs 8 electrons for stability |
Oxidation Number | Number assigned to the charge of an ion in building 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 |