The element used in balloons to make them float is helium. Helium is a light, non-toxic gas that is less dense than air, which allows helium-filled balloons to rise. Unlike hydrogen, helium is safe to use because it is inert and does not pose a flammability risk. Helium is obtained primarily from natural gas deposits and is widely used in various applications, including scientific research, medical imaging, and party decorations. When filled with helium, balloons can create an uplifting and festive atmosphere, making them popular for celebrations, events, and gatherings.