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Purity of a substance

the melting p...

Question

the melting point of hydrogen is -259.87C and its boiling point is -252C. This means at this very low temperature -252*C hydrogen in the form of gas ?

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Solution

At room temperature and under standard pressure conditions, hydrogen is a gas that is tasteless, odorless and colorless. Hydrogen can exist as a "liquid" under high pressure and an extremely low temperature of 20.28 kelvin (−252.87°C, −423.17 °F)
That means hydrogen exist in liquid state at -252.87°C

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