- atom and a
triple bond with the
other carbon atom). Each
carbon atom is
tetravalent (valence 4), but has
oxidation state −1. * The
perchlorate ion ClO−4...
-
brand name
Dengvaxia and made by
Sanofi Pasteur, is a live
attenuated tetravalent vaccine that is
administered as
three separate injections, with the initial...
- of
terbium is +3 (trivalent), such as in TbCl 3. In the
solid state,
tetravalent terbium is also known, in
compounds such as
terbium oxide (TbO2) and...
- lanthanides, but
uranium does not
favour the
trivalent state,
preferring to be
tetravalent or hexavalent. On the
other hand, lanthanide-like
configurations for...
- protactinium(V). Thus
tetravalent protactinium in
solutions is
obtained by the
action of
strong reducing agents in a
hydrogen atmosphere.
Tetravalent protactinium...
- corner-sharing SiO 4 tetrahedra.
Sodium is
present as an extra-framework
cation (in green). Si
atoms can be
partially replaced by Al or
other tetravalent metals....
- element; it has
symbol C and
atomic number 6. It is
nonmetallic and
tetravalent—meaning that its
atoms are able to form up to four
covalent bonds due...
-
general bonds of
carbon with
other elements are
covalent bonds.
Carbon is
tetravalent but
carbon free
radicals and
carbenes occur as short-lived intermediates...
- molecule. In
ammonia (a), N is
connected to
three H
atoms and is trivalent. In
carbon tetrachloride (b), C is
connected to four Cl
atoms and is
tetravalent....
-
brittle crystalline solid with a blue-grey
metallic lustre, and is a
tetravalent metalloid and semiconductor. It is a
member of
group 14 in the periodic...
