nitrogen

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nitrogen
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UFP Historical Society
Symbol N
Atomic Weight 14.0067
Atomic Number 7
Discovered 1772
First Appearance TOS 15 (17 Nov 1966)
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Nitrogen (element 7) was discovered in Scotland on Earth in 1772.[1] An elemental gas that is required by most humanoid life-forms for breathing. Class M planets all have oxygen-nitrogen atmospheres.[2]

Notes and References