Important Valencies

• Hydrogen ion (H+)
• Sodium ion (Na+)
• chloride Cl-
• oxide (O2-)
• hydroxide (OH-)
• calcium ion (Ca2+)
• sulfide (S2-)
• nitrate (NO3^-)
• fluoride (F-)
• ammonium ion (NH4^-)
• carbonate (CO2^2-)
• silver ion (Ag+)
• zinc ion (Zn2+)
• copper II ion (Cu2+)
• lead II ion (Pb2+)
• sulfate (SO4^2-)
• aluminium ion (Al3+)
• bromide (Br-)
• iodide (I-)
• potassium ion (K+)