Hydrogen (H)
+1
Lithium (Li)
+1
Sodium (Na)
+1
Potassium (K)
+1
Cesium (Cs)
+1
Beryllium (Be)
+2
Magnesium (Mg)
+2
Calcium (Ca)
+2
Strontium (Sr)
+2
Barium (Ba)
+2
Aluminum (Al)
+3
Transition metals that need charges:
chromium, manganese, copper, iron, lead, mercury, nickel, tin. Silver and Zinc have one oxidation state so don't need roman numerals.
Hydride (H)
-1
Fluoride (F)
-1
Chloride (Cl)
-1
Bromide (Br)
-1
Iodide (I)
-1
Oxide (O)
-2
Sulfide (S)
-2
Nitride (N)
-3
Phosphide (P)
-3
Ammonium
NH4+1
Acetate
C2H3O2-1
Bicarbonate
HCO3-1
Carbonate
CO3-2
Perchlorate
ClO4 -1
Chlorate
ClO3-1
Chlorite
ClO2-1
Hypochlorite
ClO-1
Permanganate
MnO4-1
Cyanide
CN-1
Hydroxide
OH-1
Peroxide
O2-2
Nitrate
NO3-1
Nitrite
NO2-1
Chromate
CrO4-2
Dichromate
Cr2O7-2
Sulfate
SO4-2
Sulfite
SO3-2
Phosphate
PO4-3
Phosphite
PO3-3