-ate Transitional Metal Polyatomic Ions: Formulas and Charges
IV B/4 V B/5 VI B/6 VII B/7 VIII B/8
Intro To
Polyatomic Ions

The Problem
-ite Rule
-ide Rule
Taylor's 3/4 -ate Rule
Taylor's Charge Rule

Vanadate

VO4Y-
Chromate

CrO4Y-
Manganate

MnO4Y-
Ferrate

FeO4Y-
Polyatomic Ion Charts
from Textbooks

McMurray: Table 3.2
Silverberg: Table 2.5
Corwin: Table 7.03
Tillery: Table 9.3
Kotz: Table 3.1
Hill: Table 5.04
 
Molybdate

MoO4Y-
Click
on the X
in the Formula
for the #oxygens
Click
on the Y-
in the Formula
for the charge
Other -ate Polyatomic Ions
Acetate Ion
Hydrogen carbonate Ion
Hydrogen phosphate Ion
Hydrogen sulfate Ion
Chromate Ion
Dichromate Ion
Dihydrogen phosphate Ion
Permanaganate Ion
Complete List
of Polyatomic Ions
 Tungstate 

WO4Y-
Dichromate

Cr2O7Y-
Taylor's 3/4
Oxygen Rule   O-All
Border Three Rule:
0 1 2 3 4 5 6 7 8 9
Block of 4/6 Rule:
6-Both   1 2 3 4 5 6   6-All
O-Both   5 6   O-None
Transitional Metal O4 Rule:
0 1 2 3 4 5 6 7 8    T-All
Dot Structures    T-Both
Taylor's
Charge Rule   O-All
Single Bond Rule:
0 1 2 3 4 5 6 7 8 9
Double Bond Rule:
6-All   1 2 3 4 5   6-Both
Hydrogen Rule:
T-Both     1 2 3   O-None
Transitional Metal -2 Rule:
0 1 2 3 4 5 6 7 8   T-All
See if you can discover a relationship
between the
# of oxygens in the formula,
and the
Position of the -ate ion
on the periodic table
!
Permanganate

MnO4Y-