Quiz on Helium

Helium is a colorless, odorless, and tasteless gas that is the second lightest and second most abundant element in the universe after hydrogen. It is represented by the symbol He and has the atomic number 2. Helium is a noble gas, meaning it is chemically inert and does not easily react with other elements. It was first discovered in the Sun’s spectrum before being found on Earth. Helium is widely used in filling balloons, airships, and in cooling superconducting magnets such as those in MRI scanners. It also plays a vital role in cryogenics and in providing an inert atmosphere for welding.