Question

why is diamond clear and hard while graphite is soft? why is coal hard and chunky?​

Answer 1

Answer:

Carbon atoms in diamond are bonded in a strong tetrahedron pattern making it hard and clear whereas carbon atoms in graphite are bonded in weak covalent bonds making it soft and black. ... Because of pressure and elevated temperature the carbon becomes hard and chunky

Explanation:

Answer 2

photo with explanation why it so