CHEMISTRY
OF IRON, COBALT AND NICKEL
Group
VIIIB in the periodic system are
divided into 3
sub groups. That vertically called triad transition. In
the modern periodic system, this third triad transition was given new classification,
namely no. 8,
9, and 10. But
the tendency of
properties especially their
chemical properties
horizontally have
more similarities
than vertically. So it
is grouped again
into 3 groups
of horizontal,
each consisting of 3 elements. Iron,
cobalt, and nickel are
an element contained horizontally in the transition group VIIIB.
These elements tends to have similar properties so that they
can mix and form an alloy. This essay
will briefly discusses about the history, abundance, isolation, properties,
uses, iron, cobalt and nickel alloys and its compound namely the oxides; the
metallates; the sulfides, selenides and tellurides; the halides and oxohalides;
and the complexes.
