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Properties of Hydrogen ?( 5 Points ) .
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Answer 1

✓✓ At standard temperature and pressure, hydrogen is a nontoxic, nonmetallic, odorless, tasteless, colorless, and highly combustible diatomic gas with the molecular formula H2. Hydrogen is also prevalent on Earth in the form of chemical compounds such as hydrocarbons and water.

✓✓ Hydrogen has the following physical parameters:-

•Melting temperature — (-259.2) degrees Celsius;

•Boiling temperature — (-252.76) degrees Celsius;

•In this interval, hydrogen is a colorless liquid without any smell;

•At high pressure, snow-like crystals of solid hydrogen form