Element Nitrogen (N)

Atomic number 7 · nonmetal · Atomic mass 14.007 u

Atomic Mass
14.0070 u
Element Properties
Atomic Number 7
Atomic Mass 14.0070 u
Category nonmetal / 非金属
Group 15
Period 2
Block P
Electron Configuration [He] 2s² 2p³
Electronegativity (Pauling) 3.04
Phase at STP Gas
Density 0.001251 g/cm³
Year Discovered 1772

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