By stronger, I am guessing you meant " stronger intermolecular forces ". Ionic compounds do not necessarily have stronger intermolecular forces than covalent compounds. For example, it is true that NaCl(an ionic compound) has strong electrostatic attractions while H2O(a covalent compound) has very weak London forces. However, SiO2 is a giant covalent compound, and has very strong covalent bonds between molecules, even stronger than the electrostatic forces of NaCl.
Nucleic acids would be one example of a covalent compound with more than 3 elements. Proteins have more than 3 elements as well. Many organic compounds do, it is quite common.
H2O has a stronger bond then CaO because H2O is a covalent compound (made up of two nonmetals), whereas CaO is an ionic compound (made up of both a metal and nonmetal), and covalent bonds are stronger then ionic bonds.
The same atoms can combine in more than one ratio.
Sulfur and oxygen can form compounds, but typically they form covalent compounds instead of ionic compounds. This is because both sulfur and oxygen are nonmetals, which tend to share electrons rather than transfer them to form ions. Examples of covalent compounds between sulfur and oxygen include sulfur dioxide (SO2) and sulfur trioxide (SO3).
Compounds bonded by covalent bonds do not necessarily have low melting points. Some have whereas some don't have.Some polymers and hydrocarbons have very high melting points. But it can be said that they don't have melting points as high as ionic compounds. It is so because ionic bonds are stronger than the covalent bonds.
Intermolecular forces are the forces of attraction that exist between molecules in a compound. The stronger the attractions between particles the more difficult it will be to separate them. When substances boil, the particles are completely separated from one another and the attractions between the molecules are completely overcome.
No, covalent is stronger
Ionic bonds are generally weaker than covalent bonds because they are formed through the attraction between oppositely charged ions, while covalent bonds are formed by sharing electrons. This results in a stronger bond in covalent compounds compared to ionic compounds. Additionally, ionic compounds tend to have lower melting and boiling points due to the weaker forces holding the ions together.
Ionic compounds have higher melting points because the bond olding the ionic crystal together is stronger than the intermolecular forces (van der Waals) holding covalent molecules together. Giant covalent molecules such as dialmond and silicon dioxide have very high melting points because the lattice is held together by stong covalent bonds
Ionic bonds are generally stronger than covalent bonds due to the attraction between oppositely charged ions in ionic compounds. Covalent bonds involve sharing electrons between atoms, which can be stronger or weaker depending on the atoms involved.
Covalent compounds have lower melting points compared to ionic compounds because covalent bonds are generally weaker than ionic bonds. In covalent compounds, individual molecules or atoms are held together by shared electrons, which are weaker than the electrostatic attraction in ionic compounds. Hence, less energy is required to break the bonds in covalent compounds, resulting in lower melting points.
They maintain their bonding far longer than nonpolar molecules can with the addition of heat energy. Remember their slightly negative ends will bind with the slightly positive ends of the adjacent molecule.
Melting points of covalent compounds are generally lower than those of ionic compounds. This is because covalent compounds have weaker intermolecular forces compared to the strong electrostatic forces present in ionic compounds, so they require less energy to break apart the molecules.
Ionic bonds are stronger.
Ionic compounds do not dissolve well in liquid covalent compounds because their strong ionic bonds are not easily broken by the weaker intermolecular forces present in covalent solvents. The polar nature of the covalent solvents also does not provide sufficient interaction with the ions to overcome the ionic bonding in the solid.
Solid molecular covalent compounds consist of molecules held together with intermolecular forces, such as dipole dipole interactions and london dispersion forces.Covalent compounds which are giant molecules such as found in diamond or silica are in fact high melting as the strong covalent bonds have to be broken to break down the crystal.Ionic compounds are generally high melting as the strong ionic bonds have to be broken to break down the crystal lattice.
Usually, however, the are a few covalent compounds, such as silicon dioxide (SiO2) that form covalent networks rather than molecules.