Fixed Valence, Variable Valence, & Polyatomic ions

• Hydrogen 


  H^+1
• Lithium 


  Li^+1
• Sodium 


  Na^+1
• Potassium 


  K^+1
• Silver


  Ag^+1
• Barium 


  Ba^+2
• Calcium 


  Ca^+2
• Beryllium 


  Be^+2
• Magnesium 


  Mg^+2
• Strontium 


  Sr^+2
• Zinc 


  Zn^+2
• Boron


  B^+3
• Aluminum 


  Al^+3
• Silicon


  Si^+4
• Fluoride 


  F^-1
• Bromide


  Br^-1
• Chloride


  Cl^-1
• Iodide 


  I^-1
• Oxide 


  O^-2
• Peroxide 


  O2^-2
• Sulfide 


  S^-2
• Nitride


  N^-3
• Phosphide 


  P^-3
• Carbide 


  C^-4
• Copper 1


  Cu^+1
• Copper 2


  Cu^+2
• Mercury 1


  Hg^+1
• Mercury 2


  Hg^+2
• Gold 1


  Au^+1
• Gold 3

  Au^+3
• Iron 2


  Fe^+2
• Iron 3


  Fe^+3
• Chromium 2


  Cr^+2
• Chromium 3


  Cr^+3
• Nickel 2


  Ni^+2
• Nickel 4


  Ni^+4
• Manganese 2


  Mn^+2
• Manganese 3


  Mn^+3
• Carbon


  C^+2 & C^+4
• Lead 2


  Pb^+2