covalent bond
Definition of covalent bond
an
attractive
force
between
two
atoms
of
a
molecule
generated
by
the
merging
of
an
electron
orbital
of
each
atom
into
a
combined
orbital
in
the
molecule
.
Such
bonds
vary
in
strength
,
but
in
molecules
of
substances
typically
encountered
in
human
experience
(
as
,
water
or
alcohol
)
they
are
sufficiently
strong
to
persist
and
maintain
the
identity
and
integrity
of
the
molecule
over
appreciable
periods
of
time
.
Each
such
bond
satisfies
one
unit
of
valence
for
each
of
the
atoms
thus
bonded
.
Contrasted
with
hydrogen
bond
,
which
is
weaker
and
does
not
satisfy
the
valence
of
either
atom
involved
.
- Blackstone.
See also:
Bond
Related Words
bond
,
chemical
bond
,
coordinate
bond
,
dative
bond
,
double
bond
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