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Azide
Azide
is the
anion
with the formula N
3
-
. It is the
conjugate base
of
hydrazoic acid
(HN
3
). N
3
-
is a linear anion that is
isoelectronic
with
CO
2
and
N
2
O
. Per
valence bond theory
, azide can be described by several resonance structures, an important one being N
-
=N
+
=N
-
. Azide is also a
functional group
in
organic chemistry
, RN
3
. The dominant application of azides is as a propellant in
air bags
.
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