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       Helium gas is used to inflate blimps, research balloons, and balloons for celebrations. It is used as an inert shield         for arc welding, pressuring liquid-fueled rocket fuel tanks, and in supersonic wind tunnels.

Helium is a chemical element with the He symbol and Helium is a colourless, tasteless, and odourless gas with an atomic number. Helium is the Universe’s second most common element (after hydrogen), accounting for around 24 per cent of its weight.

Helium (He), chemical element, Group 18 inert gas (noble gases) of the periodic table. The second lightest element (the lightest is just hydrogen), helium is a colourless, odourless and tasteless gas that is liquid at −268.9 °C.

So there is little interaction between the noble gas atoms, giving them a low boiling point. An important thing to note is that the inter molecular forces are rising with atomic size, and that’s why helium has a lower boil than neon, preceded by argon, etc.

Helium gas can be used to treat conditions like asthma and emphysema for respiratory ailments. Liquid helium also has a medical function, as it is used in MRI scanners and NMR spectrometers as a cooling medium for magnets and process use.