For example covalent compounds.
Covalent solids generally have lower melting points than ionic solids. This is because covalent solids are made up of discrete molecules held together by relatively weak intermolecular forces, whereas ionic solids are made up of ions held together by strong electrostatic forces. The weaker intermolecular forces in covalent solids require less energy to overcome, resulting in a lower melting point.
lower melting points
Ag, C, and Tn
Group 3
Sodium chloride is an ionic compound that has a crystalline structure. Each sodium ion (Na+) interacts with 6 chloride ions (Cl-) on each side of it, and each Cl- interacts with the 6 Na+ around it. In a single salt crystal, there are millions and millions of ionic bonds. To melt an ionic material, you have to break each of those ionic bonds. Ionic bonds are not that weak, and when you try to break all of them it takes a lot of energy! Ionic compounds are different than molecular ones in this way. To melt ice, for instance, you don't have to break the bonds in water, you just have break the much weaker attractive forces between two water molecules that are next to each other (called intermolecular forces). These types of attractive forces are much easier to breaker than ionic bonds, and so most molecular compounds have lower melting point than do ionic ones. Most ionic compounds have very very high melting points in fact.
Non-metals have lower boiling points than metals. A link can be found below.
Molecular solids
Molecular solids
Ionic compounds have a higher melting point.
Covalent compounds have a lower melting point.
These are organic compounds.
Molecular Solids have a lower melting point
Covalent compounds have a lower melting point.
Covalent compounds have a lower melting point.
a lower melting point
No, ionic compounds have high melting and boiling points. This is due to the strength of the electrostatic attraction between the positively-charged and the negatively-charged ions.
Ionic compounds, metallic bonded substances and amorphous substances are typically solids under normal conditions. Molecular solids generally have lower melting points so the vast majority ill be gases or liquids. A significant number with large molecules will also be solids, e.g. waxes.
Molecular compounds tend to have lower melting points.