Covalent bonds do not melt. Compounds with covalent bonds melt and the melting point depends primarily on whether there are discrete molecules held together by intermolecular forces (which have lower melting points) or giant covalent networks such as in silica or diamond (which tend to have higher melting points).
Generally covalent molecular compounds have low melting points because the forces of attraction between molecules are weak. Some covalent compounds are giant molecules and these have high melting points, e.g. silica SiO2
These are specific data for each compound.
negative 23 degrees Celsius
724-740 oC
Madd
Molecular Solids have a lower melting point
Generally the ionic molecules has a higher melting point.
It is not possible for the polar covalent compound to have a lower melting point than the non-polar covalent compound because they have ionic bonds.
Ionic compounds have higher melting points than covalent compounds. Common table salt, sodium chloride, is an ionic compound and has a melting point of 801 oC. Table sugar, sucrose, a covalent compound, has a melting point of about 186 oC.
Covalent compounds have a lower melting point.
Covalent compounds have a lower melting point.
Molecular Solids have a lower melting point
Covalent compounds have a lower melting point.
Generally the ionic molecules has a higher melting point.
This is the covalent bond.
It is not possible for the polar covalent compound to have a lower melting point than the non-polar covalent compound because they have ionic bonds.
This is the covalent bond.
Ionic compounds have higher melting points than covalent compounds. Common table salt, sodium chloride, is an ionic compound and has a melting point of 801 oC. Table sugar, sucrose, a covalent compound, has a melting point of about 186 oC.
Covalent compounds have a lower melting point.
high boiling point low melting point
CaCl2 is ionic, is solid and will have the highest melting point. The rest are covalent compounds.
Ionic compounds generally have higher melting and boiling points.