CH 101 notes 9-19

CH 101 notes 9-19 - Ionic Oxidation State Naming compounds...

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Naming compounds Need prefixes NM , NM Molecular How Many di nitrogen tri oxide di nitrogen mon oxide nitrogen di oxide N 2 O 3 N 2 O N O 2 Ionic Oxidation State pre NM pre NM ide EN EN δ + δ - Section 5.3 M&NM or polyatomic M(I,II,Al) NM ide aluminum sulfide aluminum sulfate Al 2 S 3 M polyatomic Al 2 ( SO 4 ) 3 HM (ox#) polyatomic TM (ox#) NM ide cobalt(III) chloride cobalt(III) chloride Greek Prefixes for the # of type of Atom # of Atoms Prefix 1 2 3 4 5 6 7 8 9 10 mono Example CO – carbon monoxide Section 5.3 di tri tetra penta hexa hepta octa nona deca CO 2 – carbon dioxide PCl 3 – phosphorus trichloride CCl 4 – carbon tetrachloride PF 5 – phosphorus pentafluoride S 2 Br 6 – disulfur hexabromide P 4 O 7 – tetraphosphorus heptoxide Determine the type (ionic or molecular) and name the compounds SO 3 CrS 3 Cl 2 O 7 NaBrO 2 MgSO 3 SeCl 2 Section 5.3 NH 4 F 1A 2A 3A 4A 5A 6A 7A 8A Be Mg Li H Na C B He N O F Ne Si Al P S Cl Ar Lewis Symbols (dots = # of valence electrons) Section 5.4 To Build a Compound object of the game is: To Build a Compound object of the game is: Have an octet of e - s in outer shell. Atoms accomplished this by either: •Losing valence e - s •Gaining valence e - s metals nonmetals ionic ionic cmpds cmpds •Sharing valence e - s nonmetal-nonmetal covalent covalent cmpds cmpds /molecules /molecules Exception to octet rule Exception to octet rule: H is stable when it has
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