1. Helium: Helium is the most commonly used gas for balloons due to its non-flammable and less dense properties compared to air. It is lighter than air, making balloons filled with helium float more effectively.
2. Hydrogen: Hydrogen was historically used in balloons before being largely replaced by helium. Hydrogen is also lighter than air and provides lift, but it is highly flammable and can pose a safety risk.
3. Nitrogen: Nitrogen is another non-flammable gas that can be used in balloons. It is denser than helium but still lighter than air, allowing balloons filled with nitrogen to float.
4. Air: In certain cases, balloons may also be filled with regular air. Air-filled balloons have limited lift compared to helium or hydrogen-filled balloons, and they will not float for as long.
It is important to note that the choice of gas for balloons depends on factors such as safety, desired float time, and specific regulations in different regions. Always prioritize safety when handling any type of balloon gas and follow the recommended guidelines for proper use and handling of these gases.
