Diamond is one of the hardest materials known to man, but experts think it can be squashed into something even harder. The precious stone is a naturally occurring substance made of carbon crystals. It ...

In diamond, each carbon atom is bonded to four other carbon atoms in a tetrahedral arrangement. But under the right circumstances, carbon can arrange itself hexagonally, forming a hardier material ...

It is a tetrahedral molecule, so the charges are symmetrical. The \(\delta+\) part of the molecule (the carbon atom) is locked away at the centre and no matter what direction you approach the ...