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by: Carmela Kilback


Carmela Kilback
GPA 3.92


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Class Notes
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This 8 page Class Notes was uploaded by Carmela Kilback on Wednesday September 9, 2015. The Class Notes belongs to CHEM 142 at University of Washington taught by Staff in Fall. Since its upload, it has received 16 views. For similar materials see /class/192581/chem-142-university-of-washington in Chemistry at University of Washington.




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Date Created: 09/09/15
Is a given atom more likely to form an anion or a cation What monoatomic ions will each of the elements form EP 24 Barium Z 56 2A EP 25 Sulfur Z 16 6A EP 26 Aluminum Z 13 3A EP 27 Fluorine Z 9 7A Plan We use the Z value to find the element in the periodic table and then find the nearest noble gas Elements that lie after a noble gas on left side of periodic table will lose electrons Elements that lie before a noble gas on right side of periodic table will gain electrons Give the Name and Chemical Formulas of the Compounds formed from the following pairs of elements EP 28 Sodium IA and Oxygen VIA NaZO sodium oxide EP 29 Zinc 11B and Chlorine VllA ZnCl2 zinc chloride EP 30 Calcium HA and Fluorine VllA Can calcium uoride EP 31 Strontium 11A and Nitrogen VA Sr3N2 strontium nitride EP 32 Hydrogen and Iodine VllA HI hydrogen iodide EP 33 ScandiumlllB and Sulfur VIA Sc2S3 scandium sul de Determining Names and Formulas of Ionic Compounds of Elements That Form More Than One Ion Give the systematic names for the formulas or the formulas for the names of the following compounds EP 34 iron Ill sul de Fe is 3 and S is 239 therefore the compound is FeZS3 EP 35 Con The anion is uoride F 39 and there are two F 39 the cation is cobalt and it must be Co2 therefore the compound is cobalt II uoride EP 36 c tinIV oxide The cation is Sn the oxide ion is 0239 therefore the formula of the compound is SnO2 EP 37 PbCl2 The anion is chloride Cl39 there are two anions so the lead cation is Pb2 therefore the name of the compound is lead 11 chloride Common Potyatomic tonsquot Formula Name Formula Name Ca ona NH4 ammonium H30 hydronium Anions Anions cont cnacooquot acetate Cer39 ohromate or CEHJUZ39 Cr20397 quot diohromate 39 cyanide Dz peroxide OHquot hydroxide P f39 phosphate CID hypochior te HPD4 hydrogen BID ohllorite phosphate 53933 Bhl l39 i HEPIE4 dihydrogen BIIEM perchlorate phosphate NO nitrite 803 39 sulfite N03 E nitrate 504 quot sulfate quot104 permanganate HSOJ hydrogen sulltate 0032 carbonate or bisulfate HOG hydrogen carbonate or bicarbonate Boldface ions are most common Examples of Names and Formulas of Oxoanions and Their Compounds EP 38 KNO2 potassium nitrite EP 39 MgNO32 magnesium nitrate EP 40 LiClO4 lithium perchlorate EP 41 NaClO3 sodium chlorate EP 42 RbClO2 rubidium chlorite EP 43 CsClO cesium hypochlorite EP 61 EP 62 EP 63 EP 64 EP 65 EP 66 EP 67 calcium nitrate ammonium sulfite strontium sulfate lithium nitrite potassium hypochlorite lithium perbromate rubidium chlorate CaN032 N 39l42SO3 Srso4 LiNo2 KCIO LiBro4 RbCIo3 Determining Names and Formulas of Ionic Compounds Containing Polyatomic Ions EP 50 magnesium perchlorate Magnesium is the Mg2 cation and perchlorate is the C10439 Anion therefore we need two perchlorate anions for each Mg cation The formula is MgClO42 EP 51 NH4ZSO3 NH4 is the ammonium ion and 803239 is the sulfite anion therefore the name is ammonium sul te EP 52 calcium nitrate Calcium is the Ca2 cation and nitrate is the N03 anion therefore the formula is CaNO32


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