Oxygen

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Revision as of 19:24, 25 April 2011

A colorless, tasteless, odorless gas that is the second most abundant constituent of dry air, comprising 20.946%.

Its name derives from the Greek roots ὀξύς (oxys) ("acid", literally "sharp", referring to the sour taste of acids) and -γενής (-genēs) ("producer", literally "begetter"), because at the time of naming, it was mistakenly thought that all acids required oxygen in their composition. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless, odorless, tasteless diatomic gas with the formula O2.


Also see

Reference

  • Wikipedia See Oxygen [1]

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