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Nascent Hydrogen. The hydrogen gas, which is just liberated as a result of a chemical is called nascent hydrogen or newly born hydrogen. It is obtained by passing dihydrogen gas at atmospheric pressure through an electric arc between two tungsten rods. The electric arc maintains a temperature around 4000 - 4500Â°C.
Hydrogen occurs as a gas that you canât see and canât smell. It is about 14 times lighter than air. When you combine two atoms of hydrogen with one atom of oxygen you get a water molecule H 2O. Like nitrogen, hydrogen can also be condensed to a liquid that freezes at â 259Â°C (-434Â°F) and boils at -252Â°C (-423Â°F). Hydrogen is one of the most common elements in our universe. The sun and many stars are made of hydrogen.