Covalent bonds.
<lI> Hydrogen  (H[2]):  two  hydrogen  atoms can form a single covalent
bond by sharing one pair of electrons.
<lI> Oxygen  (O[2]):  two  oxygen atoms share two pairs of electrons to
form a double covalent bond.
<lI> Water  (H[2]O):  two hydrogen atoms and one oxygen atom are joined
by single covalent bonds to produce a molecule of water.
<lI> Methane  (CH[4]):  four  hydrogen atoms can satisfy the valence of
one carbon atom, forming methane.
<li> Q:  What  kind of bonds form between these hydrogen atoms and
carbon?
<bR>o A: Single covalent bonds.