Before revision: Properties High strength High elastic modulus High melting point Brittle Their strength, stiffness, and high melting points are consequences of the strength and stiffness of the covalent bonds that hold them together.
After revision: (with the exception of graphite)Properties High strength High elastic modulus High melting point Brittle Their strength, stiffness, and high melting points are consequences of the strength and stiffness of the covalent bonds that hold them together.