Polyatomic Ions Chart

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Table of Polyatomic Ions
Activity
Series
-
-
-
acetate
CH
COO
fluorite
FO
perchlorate
ClO
3
2
4
Li
-
-
-
or C
H
O
formate
HCOO
periodate
IO
K
2
3
2
4
+
2-
-
ammonium
NH
germanate
GeO
permanganate
MnO
Rb
4
3
4
Ba
3-
-
2-
arsenate
AsO
glutamate
C
H
NO
peroxide
O
4
5
8
4
2
Sr
3-
2-
2-
arsenite
AsO
hexachloroplatinate
PtCl
peroxydisulfate S
O
3
6
2
8
Ca
-
2-
3-
barbital
C
H
N
O
hexafluorosilicate
SiF
phosphate
PO
8
11
2
3
6
4
Na
-
-
2-
benzoate
C
H
COO
hydrogen carbonate HCO
phthalate
C
H
O
6
5
3
8
4
4
Am
-
4-
bismuthate
BiO
or bicarbonate
pyrophosphate
P
O
La
3
4
7
3-
-
2-
borate
BO
hydrogen oxalate
HC
O
selenate
SeO
Y
3
2
4
4
Mg
-
2-
2-
bromate
BrO
hydrogen phosphate HPO
silicate
SiO
3
4
3
Ce
2-
HPO
2-
-
carbonate
CO
hydrogen phosphite
stearate
C
H
COO
3
3
17
35
Sc
-
-
2-
chlorate
ClO
hydrogen sulfate
HSO
sulfate
SO
3
4
4
Pu
-
2-
chlorite
ClO
or bisulfate
sulfite
SO
Np
2
3
2-
-
2-
chromate
CrO
hydrogen sulfite
HSO
tartrate
C
H
O
Th
4
3
4
4
6
Be
3-
2-
citrate
C
H
O
or bisulfite
tellurate
TeO
6
5
7
4
U
-
+
2-
cyanamide
HCN
hydronium
H
O
tetraborate
B
O
3
4
7
Al
-
-
-
-
cyanate
OCN
or CNO
hydroxide
OH
thiocyanate
SCN
Ti
-
-
2-
cyanide
CN
hypochlorite
ClO
thiosulfate
S
O
V
2
3
2-
-
5-
dichromate
Cr
O
iodate
IO
tripolyphosphite P
O
Mn
2
7
3
3
10
Cr
-
-
2-
dihydrogen phosphate
H
PO
lactate
C
H
O
tungstate
WO
2
4
3
5
3
4
Zn
-
2-
-
dihydrogen phosphite
H
PO
molybdate
MoO
uranate
UO
2
3
4
4
Ga
-
VO
3-
-
ferricyanide
Fe(CN)
nitrate
NO
vandate
3
6
3
Fe
Eu
4 -
-
ferrocyanide
Fe(CN)
nitrite
NO
6
2
Cd
2+
2-
ferrorcyanate
FeSCN
oxalate
C
O
2
4
In
Co
H
He
2.1
Ni
Li
Be
B
C
N
O
F
Ne
Electronegativity
Sn
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Pb
Na
Mg
Al
Si
P
S
Cl
Ar
0.9
1.2
1.5
1.8
2.1
2.5
3.0
H
K
Ca
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Ga
Ge
As
Se
Br
Kr
Sb
0.8
1.0
1.3
1.5
1.6
1.6
1.5
1.8
1.8
1.8
1.9
1.6
1.6
1.8
2.0
2.4
2.8
Rb
Sr
Y
Zr
Nb
Mo
Tc
Ru
Rh
Pd
Ag
Cd
In
Sn
Sb
Te
I
Xe
As
0.8
1.0
1.3
1.4
1.6
1.8
1.9
2.2
2.2
2.2
1.9
1.7
1.7
1.8
1.9
2.1
2.5
Bi
Cs
Ba
Hf
Ta
W
Re
Os
Ir
Pt
Au
Hg
Tl
Pb
Bi
Po
At
Rn
Cu
0.7
0.9
1.3
1.5
1.7
1.9
2.2
2.2
2.2
2.4
1.9
1.8
1.8
1.9
2.0
2.2
Fr
Ra
Rf
Db
Sg
Br
Hs
Mt
Uun
Uuu
Uub
Nd
0.7
0.9
Hg
Ag
La
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
Pd
1.1
1.1
1.1
1.2
1.1
1.2
1.2
1.1
1.2
1.2
1.2
1.2
1.2
1.1
1.2
Ac
Th
Pa
U
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
No
Lr
Pt
1.1
1.3
1.5
1.7
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
Au
Chemistry 11 & 12 – L. Farrell

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