chem107f09wk7s

chem107f09wk7s - Chemical Bonds Chp. 7 Ionic -Electrostatic...

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Ionic - Electrostatic attraction between ions. Metal + Non Metal Covalent - Sharing of electrons Non Metal + Non Metal Metallic - Metal atoms bonded to several other atoms Metal + Metal Chemical Bonds Chp. 7
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Valence Shell Electrons – the outer most electrons. Noble Gas Configuration –ns 2 np 6 The octet rule – when possible, atoms prefer to have 8 valence electrons (ns 2 np 6 ). Octet Rule Chp. 7.3
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Lewis structures are representations of molecules showing all valence electrons, bonding and nonbonding. H Cl O Lewis Structures Chp. 7.3, 7.5
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Na Cl Ca O K O Octet Rule and Ionic Compounds Chp. 7.2
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Octet Rule and Covalent Compounds Chp. 7.3
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1. Find the sum of valence electrons of all atoms in the polyatomic ion or molecule. If it is an anion, add one electron for each negative charge. If it is a cation, subtract one electron for each positive charge. PCl 3 NH 4 + Lewis Dot Structures Chp. 7.5
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The central atom is the least electronegative element that isn’t hydrogen. Connect the
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chem107f09wk7s - Chemical Bonds Chp. 7 Ionic -Electrostatic...

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