Common Ions to Memorize 2014

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Honors Chemistry Common Ions to Memorize for Ion Mastery Quizzes
Ammonium
Acetate
Hydroxide
NH4+1
C2H3O2-1
OH-1
Phosphate
Phosphite
PO4-3
PO3-3
Sulfate
Sulfite
Sulfide
SO4-2
SO3-2
S-2
Bicarbonate
Carbonate
HCO3-1
CO3-2
Perchlorate
Chlorate
Chlorite
Hypochlorite
Chloride
ClO4-1
ClO3-1
ClO2-1
ClO-1
Cl-1
Nitrate
Nitrite
Nitride
NO3-1
NO2-1
N-3
Silver
Ag+1
Iodate
Iodite
Iodide
IO3-1
IO2-1
I-1
Zinc
Zn+2
Group 1
All +1
Oxide
Fluoride
Bromide
O-2
F-1
Br-1
Group 2
All +2
Hints and Patterns:
1) Ions that end in “ide” or keep their name have one atom in the ion and match their charge on the P.T.
a. Exception is Hydroxide
2) Ions that end in “ate” usually have 3 oxygens behind the root element and a charge of -1
a. Exceptions are Sulfate and Phosphate
3) Ions that end in “ite” have one less oxygen than the “ate”
4) Ions that start with “hypo” have one less oxygen than the “ite”
5) Ions that start with “per” have one more oxygen that the “ate”
6) Ions that start with “bi” have a hydrogen, one less oxygen, and a more positive charge
7) Ions with root elements have the same charge as their charge on the P.T.
a. Exception is Nitrate/Nitride
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