- 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...
- element; it has
symbol Hf and
atomic number 72. A lustrous,
silvery gray,
tetravalent transition metal,
hafnium chemically resembles zirconium and is found...
-
general bonds of
carbon with
other elements are
covalent bonds.
Carbon is
tetravalent but
carbon free
radicals and
carbenes occur as short-lived intermediates...
- lanthanides, but
uranium does not
favour the
trivalent state,
preferring to be
tetravalent or hexavalent. On the
other hand, lanthanide-like
configurations for...
-
vaccine is
widely used in high-risk adults.
First used in 1945, the
tetravalent vaccine was not
widely distributed,
since its
deployment coincided with...
- 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...
- form plumbites. Lead
shows two main
oxidation states: +4 and +2. The
tetravalent state is
common for the
carbon group. The
divalent state is rare for...
- the same
group as
carbon on the
periodic table and, like carbon, it is
tetravalent.
Hypothetical alternatives to
water include ammonia, which, like water...
- protactinium(V). Thus
tetravalent protactinium in
solutions is
obtained by the
action of
strong reducing agents in a
hydrogen atmosphere.
Tetravalent protactinium...
