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Unit 3
Question | Answer |
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Electron configuration | the arrangement of electrons in an atom |
Covalent bond | a bond formed when atoms share one or ore pairs of electrons |
ionic bond | a force that attracts electrons from one atom to another,which transforms a neutral atom into an ion |
ion | an atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge |
Lewis dot structure | a structural formula in which electrons are represented by dots;dot pairs or dashes between two atomic symbols represent pairs in covalent bonds |
Octet rule | an atom will be most stable when surrounded by 8 electrons in the valence shell |
Metallic bond | a bond formed by the attraction between positively charge metal ions and the electrons around them |
conductivity | material that is able to conduct electricity |
polar | describe a molecule in which the positive an negative charges are separated |
nonpolar | a covalent bond in which the bonding electrons are equally attracted to both bonded atoms |
bent | 2 atoms bond to central atom,lone pairs of 1 electron |
tetrahedral | 4 atoms bond to central atom,lone pairs of 0 electrons |
trigonal planar | 3 atoms bond to central atom,lone pairs of 0 electrons |
Linar | 2 atoms bond to central atoms, Lone pairs of 0 electrons |
Valence electron | an electron that is found in the outermost shell of an atom and that determines the atoms chemical properties |
formula unit | the simplest collection of atoms from which an ionic compounds formula can be written |
polyatomic ion | an ion made of two or more atoms |
VSEPR theory | a theory that predict some molecular shapes based on the idea that pairs of valence electrons surrounding an atom repel each other |