1. Sodium Chloride (NaCl): This is table salt, a very common compound found naturally and used in cooking.

2. Sodium Hydroxide (NaOH): This is a strong base, also known as lye or caustic soda, used in various industrial processes.

3. Sodium Bicarbonate (NaHCO3): This is baking soda, a common leavening agent in baking and also used in cleaning products.

Sodium is a very reactive element, so it forms many other compounds. These three are just some of the most common and widely used.