|This is the by far most important group. After all, you and me are carbon-based life forms. Without carbon (C) no biology, without silicon (Si) no Internet, electronics, computer tomography and so on.|
|I don't have to emphasize the
importance of carbon -based organic chemistry, but let's not forget that the
inorganic iron (Fe) based "chemistry" is still more important.
Elementary clean carbon in the form of graphite is very important for parts of
the high-tech industry, and elemental carbon in the form of diamonds are
Dirty carbon in the form of coal, while killing the climate, is still indispensable for the wealth of nations.
|Most of the silicon produced is not
used for microelectronics or solar cells bit for steel making. A rather large
part also goes into making silicones, oily or putty-like stuff, that does not
only wonders to female profiles but is a high-tech material with rapidly
And let's not forget that all glasses and a lot of ceramics contain large quantities of silicon.
|Germanium (Ge) is used for some rather special applications an small quantities, but tin (Sn) and leaf (Pb) were and are metals of importance. Solder, a trivial but important part of all electronics, was a tin-lead alloy until recently. Since lead and many of its compounds are rather poisonous, lead is being phased out right now.|
|Tin was the essential alloy element for good bronze (a copper (Cu) tin (Sn) alloy). It was the essential strategic metal in the bronze age; mined in remote locations (like England) and traded across huge distances more than 3.000 years ago. In oxide (SnO2I is just about now starting a potentially big career as semiconductor.|
|Table of Basic Data.|
|In case of doubt all numbers are for room temperatures|
cubic; lattice const. = a
bcc = body centered cubic
sc = simple cubic
hp = simple hexagonal
hcp = hexagonal close packed; lattice constants a and c.
op = simple orthorhombic, monoclinic, triclinic
tp = simple tetragonal
dia = diamond structure
r = trigonal or rhomboedral trigonal
Periodic Table of the Elements
Bravais Lattices and Crystals
Diamond, and other Carbon Specialities
Lattice and Crystal
Units and Constants
© H. Föll (Iron, Steel and Swords script)