Which is the hardest substance on earth ?
Answers
Answer:
which is also known as hexagonal diamond..
Explanation:
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Answer:
Diamond is the hardest substance on the earth .
Explanation:
Structure of Diamonds and its uses
Structure:
All the carbon atoms of Diamond are said to possess strong chemical bonds with that of the four other carbon atoms, thus making a perfect tetrahedron structure and on throughout the crystal. The carbon atoms, here are sp3 hybridized, and the bond lengths of carbon-carbon atom are equal. Hence Diamond forms a three-dimensional network of strong covalent bonds.
Diamond has a very high melting point of about 3843 K and a high density of about 3.51 g/cm3. It is known to be a poor conductor of electricity since its valence electrons get involved in C-C sigma covalent bonds, and hence they are localized and are not free to conduct the electricity.
Uses and Applications :
Diamond is known to be the hardest substances on the Earth. It is used in making of tools that are utilized for grinding, cutting, drilling, etc.
Diamond is used in the manufacture of filaments made of tungstens used for light bulbs.
It is used in the making of jewelry.
Diamonds are used by most of the surgeons in the removal of the cataract from the eyes as a high precision instrument.
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