Nitrogen is a chemical element with symbol N and atomic number 7. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772.
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Element Nitrogen (N), Group 15, Atomic Number 7, p-block, Mass 14.007. Sources, facts, uses ... State at 20°C, Gas, Key isotopes, 14N. Electron configuration ...
Dec 22, 2014 ... Properties, sources and uses of nitrogen, one of the most abundant gases in Earth's atmosphere.
May 22, 2014 ... This new proposed method, known as nitrogen asphyxiation, seals the condemned in an airtight chamber pumped full of nitrogen gas, causing ...
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nitrogen (N): Nitrogen, gas that is the most plentiful element in Earth's atmosphere.
Nitrogen is an element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up ...