E2 Dissolution And Precipitation Solubility Rules Worksheets Page 3
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3Table E2 - Some Commonly Occurring Ions
CATIONS
ANIONS
+
-
Na
sodium ion
Cl
chloride ion
+
-
K
potassium ion
Br
bromide ion
2+
-
Mg
magnesium ion
I
iodide ion
2+
-
Ca
calcium ion
OH
hydroxide ion
2+
-
Sr
strontium ion
CN
cyanide ion
2+
-
Ba
barium ion
NCS
thiocyanate ion
3+
-
Al
aluminium ion
NO
nitrite ion
2
2+
-
Pb
lead(II) ion
NO
nitrate ion
3
2+
2-
Sn
tin(II) ion
SO
sulfite ion
3
4+
2-
Sn
tin(IV) ion
SO
sulfate ion
4
3+
-
Cr
chromium(III) ion
blue-green
HSO
hydrogensulfite ion
3
2+
-
Mn
manganese(II) ion
very pale pink
HSO
hydrogensulfate ion
4
2+
2-
Fe
iron(II) ion
pale green
CO
carbonate ion
3
3+
-
Fe
iron(III) ion
variable
HCO
hydrogencarbonate ion
3
2+
3-
Co
cobalt(II) ion
pink
PO
phosphate ion
4
2+
2-
Ni
nickel(II) ion
green
HPO
hydrogenphosphate ion
4
+
-
Cu
copper(I) ion
H
PO
dihydrogenphosphate ion
2
4
2+
-
Cu
copper(II) ion
blue
MnO
permanganate ion
purple
4
+
-
Ag
silver(I) ion
ClO
perchlorate ion
4
2+
2-
Zn
zinc ion
CrO
chromate ion
yellow
4
2+
2-
Cd
cadmium ion
Cr
O
dichromate ion
orange
2
7
2+
2-
Hg
mercury(I) ion
S
sulfide ion
2
2+
-
Hg
mercury(II) ion
HS
hydrogensulfide ion
+
-
NH
ammonium ion
CH
COO
acetate ion
4
3
2-
C
O
oxalate ion
2
4
2-
S
O
thiosulfate ion
2
3
4-
[Fe(CN)
]
hexacyanoferrate(II) ion
yellow
6
3-
[Fe(CN)
]
hexacyanoferrate(III) ion
brown
6
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