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Nitrogen, nonmetallic element of Group 15 [Va] of the periodic table. It is a colorless, odorless, tasteless gas that is the most plentiful element in Earth’s atmosphere and is a constituent of all living matter. Its atomic number is 7 and it。

Carbon dioxide appears as a colorless odorless gas at atmospheric temperatures and pressures. Relatively nontoxic and noncombustible. Heaviercolourless gas than air and may asphyxiate by the displacement of air.

From green to pink hydrogen, we reveal the rainbow of hydrogen colours and the different types of technology used to produce each. Why is a colourless gas given so many colourful terms? Green hydrogen, blue hydrogen, brown hydrogen and even。

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