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oxyanion nomenclature
ate
suffix = representative ion
B C N O F
Si P S Cl
As Se Br
I
B C N O F
Si P S Cl
As Se Br
I
B C N O F
Si PO4 SO4 Cl
AsO4 SeO4 Br
I
BO3 CO3 NO3 O FO3
SiO3 PO4 SO4 ClO3
AsO4 SeO4 BrO3
IO3
BO3
borate
CO3
carbonate
NO3
nitrate
O FO3
fluorate
SiO3 PO4 SO4 ClO3
AsO4 SeO4 BrO3
IO3
BO3
borate
CO3
carbonate
NO3
nitrate
O FO3
fluorate
SiO3
silicate
PO4
phosphate
SO4
sulfate
ClO3
chlorate
AsO4 SeO4 BrO3
IO3
BO3
borate
CO3
carbonate
NO3
nitrate
O FO3
fluorate
SiO3
silicate
PO4
phosphate
SO4
sulfate
ClO3
chlorate
AsO4
arsenate
SeO4
selenate
BrO3
bromate
IO3
BO3
borate
CO3
carbonate
NO3
nitrate
O FO3
fluorate
SiO3
silicate
PO4
phosphate
SO4
sulfate
ClO3
chlorate
AsO4
arsenate
SeO4
selenate
BrO3
bromate
IO3
iodate
BO3
borate
CO3
carbonate
NO3
nitrate
O FO31-
fluorate
SiO3
silicate
PO4
phosphate
SO4
sulfate
ClO31-
chlorate
AsO4
arsenate
SeO4
selenate
BrO31-
bromate
IO31-
iodate
BO3
borate
CO3
carbonate
NO3
nitrate
O FO31-
fluorate
SiO3
silicate
PO4
phosphate
SO42-
sulfate
ClO31-
chlorate
AsO4
arsenate
SeO42-
selenate
BrO31-
bromate
IO31-
iodate
BO3
borate
CO3
carbonate
NO3
nitrate
O FO31-
fluorate
SiO3
silicate
PO43-
phosphate
SO42-
sulfate
ClO31-
chlorate
AsO43-
arsenate
SeO42-
selenate
BrO31-
bromate
IO31-
iodate
BO3
borate
CO3
carbonate
NO31-
nitrate
O FO31-
fluorate
SiO3
silicate
PO43-
phosphate
SO42-
sulfate
ClO31-
chlorate
AsO43-
arsenate
SeO42-
selenate
BrO31-
bromate
IO31-
iodate
BO3
borate
CO32-
carbonate
NO31-
nitrate
O FO31-
fluorate
SiO32-
silicate
PO43-
phosphate
SO42-
sulfate
ClO31-
chlorate
AsO43-
arsenate
SeO42-
selenate
BrO31-
bromate
IO31-
iodate
BO33-
borate
CO32-
carbonate
NO31-
nitrate
O FO31-
fluorate
SiO32-
silicate
PO43-
phosphate
SO42-
sulfate
ClO31-
chlorate
AsO43-
arsenate
SeO42-
selenate
BrO31-
bromate
IO31-
iodate
ite
(ite = lite)one less oxygen
same charge
B C N O F
Si P S Cl
As Se Br
I
B C N O F
Si P S Cl
As Se Br
I
B C N O F
Si PO3 SO3 Cl
AsO3 SeO3 Br
I
BO2 CO2 NO2 O FO2
SiO2 PO3 SO3 ClO2
AsO3 SeO3 BrO2
IO2
BO2 CO2 NO2 O FO21-
SiO2 PO3 SO3 ClO21-
AsO3 SeO3 BrO21-
IO21-
BO2 CO2 NO2 O FO21-
SiO2 PO3 SO32- ClO2
1-
AsO3 SeO32- BrO2
1-
IO21-
BO2 CO2 NO2 O FO21-
SiO2 PO33- SO3
2- ClO21-
AsO33- SeO3
2- BrO21-
IO21-
BO2 CO2 NO21- O FO2
1-
SiO2 PO33- SO3
2- ClO21-
AsO33- SeO3
2- BrO21-
IO21-
BO2 CO22- NO2
1- O FO21-
SiO22- PO3
3- SO32- ClO2
1-
AsO33- SeO3
2- BrO21-
IO21-
BO23- CO2
2- NO21- O FO2
1-
SiO22- PO3
3- SO32- ClO2
1-
AsO33- SeO3
2- BrO21-
IO21-
BO23-
borite
CO22-
carbonite
NO21-
nitrite
O FO21-
fluorite
SiO22- PO3
3- SO32- ClO2
1-
AsO33- SeO3
2- BrO21-
IO21-
BO23-
borite
CO22-
carbonite
NO21-
nitrite
O FO21-
fluorite
SiO22-
silicite
PO33-
phosphite
SO32-
sulfite
ClO21-
chlorite
AsO33- SeO3
2- BrO21-
IO21-
BO23-
borite
CO22-
carbonite
NO21-
nitrite
O FO21-
fluorite
SiO22-
silicite
PO33-
phosphite
SO32-
sulfite
ClO21-
chlorite
AsO33-
arsenite
SeO32-
selenite
BrO21-
bromite
IO21-
BO23-
borite
CO22-
carbonite
NO21-
nitrite
O FO21-
fluorite
SiO22-
silicite
PO33-
phosphite
SO32-
sulfite
ClO21-
chlorite
AsO33-
arsenite
SeO32-
selenite
BrO21-
bromite
IO21-
iodite
“per” prefixin front of ion with
“ate” suffix=
one more oxygensame charge
BO43-
perborate
CO42-
percarbonate
NO41-
pernitrate
O FO41-
perfluorate
SiO42-
persilicate
PO53-
perphosphate
SO52-
persulfate
ClO41-
perchlorate
AsO53-
perarsenate
SeO52-
perselenate
BrO41-
perbromate
IO41-
periodate
“hypo” prefixin front of ion with
“ite” suffix=
one less oxygensame charge
BO3-
hypoborite
CO2-
hypocarbonite
NO1-
hyponitrite
O FO1-
hypofluorite
SiO2-
hyposilicite
PO23-
hypophosphite
SO22-
hyposulfite
ClO1-
hypochlorite
AsO23-
hypoarsenite
SeO22-
hyposelenite
BrO1-
hypobromite
IO1-
hypoiodite
hydrogen added to an ion changes the
charge by +1
Think proton.
Add hydrogen to an ion
Example:
carbonate: CO32-
hydrogen carbonate: HCO3-
(old name = bicarbonate)
What ishydrogen phosphate?
HPO42-
What isHSO2
- ?
hydrogen hyposulfite
lithium nitrateCation:
Li+
Anion:
NO3-
Compound: LiNO3
calcium hydroxideCation:
Ca2+
Anion:OH-
Compound: Ca(OH)2
ammonium sulfateCation:
NH4+
Anion:
SO42-
Compound: (NH4)2SO4
Try these:• sodium carbonate
• barium phosphate
• magnesium sulfate
Answers• sodium carbonate = Na2CO3
• barium phosphate =
Ba3(PO4)2
• magnesium sulfate = MgSO4
Ca(NO3)2
• Cation: calcium
• Anion: nitrate
• Compound: calcium nitrate
FeCrO4
• Cation: iron(???)• Total neg/cations = 2/1• So cation: iron(II)• Anion: chromate• Compound:
iron(II) chromate
Try these:• KClO3
• NH4OH
• Sr3(PO4)2
• Sn(ClO4)2
Answers:• KClO3 = potassium chlorate
• NH4OH = ammonium hydroxide
• Sr3(PO4)2 = strontium phosphate
• Sn(ClO4)2 = tin(II) perchlorate
Homework• Page 116, #6
• Page 120, #33
• Conductivity lab report