N
Nitrogen · element 7
Diatomic Nonmetal · Gas at room temperature
Nitrogen is a chemical element with symbol N and atomic number 7. It is the lightest pnictogen and at room temperature, it is a transparent, odorless diatomic gas. Nitrogen is a common element in the universe, estimated at about seventh in total abundance in the Milky Way and the Solar System.
Key facts
Atomic mass
14.007 u
how heavy one atom is
Phase (room temp.)
Gas
Density
1.251 g/L
how tightly packed it is
Melting point
63.15 K (-210 °C)
when solid turns to liquid
Boiling point
77.355 K (-196 °C)
when liquid turns to gas
Period
2
its row in the periodic table
Group
15
its column in the periodic table
Block
P-block
the neighbourhood it lives in
Electronegativity
3.04
how strongly it pulls electrons
Electron configuration
[He] 2s2 2p3
where its electrons live
Shells
2 · 5
electrons in each layer, inside to out
Discovered by
Daniel Rutherford
who found it
Named by
Jean-Antoine Chaptal
who gave it its name
Appearance
colorless gas, liquid or solid
what it looks like
Source: Wikipedia