A. higher melting point then molecular crystals
B. lower melting point then molecular crystals
C. discrete molecules linked by Van der waals forces
D. hydrogen bonding
A. higher melting point then molecular crystals
Covalent network crystals are solids in which the atoms are held together by covalent bonds, forming an extensive network of interconnecting bonds. Because of the strong nature of covalent bonds, covalent network crystals tend to have high melting and boiling points compared to other types of solids, such as molecular solids. In comparison, molecular solids are composed of discrete, individual molecules held together by weaker intermolecular forces, such as hydrogen bonding or van der Waals forces. As a result, molecular solids generally have lower melting and boiling points than covalent network crystals.