1. Store sodium in an airtight container: This will prevent oxygen from coming into contact with the sodium. The container should be made of a material that does not react with sodium, such as glass or polyethylene.

2. Keep sodium away from heat and moisture: Heat and moisture can accelerate the reaction between sodium and oxygen. Therefore, sodium should be stored in a cool, dry place.

3. Use a sacrificial anode: A sacrificial anode is a piece of metal that is more reactive than sodium. When the sacrificial anode is placed in contact with sodium, it will react with oxygen instead of the sodium. This will protect the sodium from reacting with oxygen.

4. Coat sodium with a protective layer: Sodium can be coated with a protective layer of oil or grease. This will prevent oxygen from coming into contact with the sodium.

5. Use sodium in an inert atmosphere: An inert atmosphere is an atmosphere that does not contain oxygen. Sodium can be used in an inert atmosphere to prevent it from reacting with oxygen.