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Ionic (e.g. sodium chloride etc.): highmelting/boiling points. Ionic bonds (electrostatic attraction between oppositely charged ions) must be broken to break the ionic lattice and form a liquid/gas. Ionic bonds are strong so lots of energy is required.

Giant covalent (e.g. diamond, graphite, silicon dioxide): high melting/boiling points. Covalent bonds (shared pairs of electrons) must be broken for the substance to become a liquid/gas. Covalent bonds are strong so lots of energy is required.

Simple covalent (e.g. water, hydrogen, ammonia, bromine): low melting/boiling points. Although covalent bonds are strong, they do not need to be broken in order to separate molecules and the substance become a liquid/gas. Only weak forces between the molecules must be overcome, which does not require much energy.

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What causes the differences in melting points and boiling points between ionic and covalent compounds molecular substances?

The differences in melting and boiling points between ionic and covalent compounds are due to the strength of the intermolecular forces present. Ionic compounds have strong electrostatic forces of attraction between oppositely charged ions, resulting in higher melting and boiling points. Covalent compounds have weaker intermolecular forces such as London dispersion forces or dipole-dipole interactions, leading to lower melting and boiling points compared to ionic compounds.


Why the melting and boiling point of covalent compound are low?

Compared to ionic compounds, covalent compounds have relatively low melting and boiling points because covalent bonds are not as strong as ionic bonds, and it is the bonds which hold materials together in the solid, or more solid phases.


Write down the differences between ionic compound from covalent compounds?

Ionic Compounds are formed by complete transfer of electrons while Covalent compounds are formed by sharing of electrons. Ionic compounds have higher melting points while covalent compounds have lower.


What is true about all covalent compounds?

Covalent compounds involve the sharing of electrons between atoms. They tend to have lower melting and boiling points compared to ionic compounds. Covalent compounds are often formed between nonmetal atoms.


How are ionic and covalent compounds different in terms of melting and boiling point and electrical conductivity and hardness and brittleness?

Ionic compounds generally have higher melting and boiling points.

Related Questions

How does the melting point of ionic compounds compared to that of covalent compounds?

Ionic compounds generally have higher melting and boiling points.


Is the boiling point of covalent compounds high or low?

high boiling point low melting point


What causes the differences in melting points and boiling points between ionic and covalent compounds molecular substances?

The differences in melting and boiling points between ionic and covalent compounds are due to the strength of the intermolecular forces present. Ionic compounds have strong electrostatic forces of attraction between oppositely charged ions, resulting in higher melting and boiling points. Covalent compounds have weaker intermolecular forces such as London dispersion forces or dipole-dipole interactions, leading to lower melting and boiling points compared to ionic compounds.


What properties do most covalent compounds have in common?

Most covalent compounds have relatively low melting and boiling points, as they are held together by weak intermolecular forces. They are usually insoluble in water but soluble in nonpolar solvents. Covalent compounds tend to be nonconductors of electricity in their solid form.


Why the melting and boiling point of covalent compound are low?

Compared to ionic compounds, covalent compounds have relatively low melting and boiling points because covalent bonds are not as strong as ionic bonds, and it is the bonds which hold materials together in the solid, or more solid phases.


Write down the differences between ionic compound from covalent compounds?

Ionic Compounds are formed by complete transfer of electrons while Covalent compounds are formed by sharing of electrons. Ionic compounds have higher melting points while covalent compounds have lower.


What is true about all covalent compounds?

Covalent compounds involve the sharing of electrons between atoms. They tend to have lower melting and boiling points compared to ionic compounds. Covalent compounds are often formed between nonmetal atoms.


How are ionic and covalent compounds different in terms of melting and boiling point and electrical conductivity and hardness and brittleness?

Ionic compounds generally have higher melting and boiling points.


Organic compounds are also covalent compounds what properties would you expect organic compounds to have as a result?

As covalent compounds, organic compounds tend to have relatively low melting and boiling points, be non-conductive of electricity, and have lower solubility in water. They also commonly exhibit isomerism, meaning they can have the same chemical formula but different structural arrangements, leading to a wide range of diverse compounds.


What is usually a property of covalently bonded compounds?

Covalent bonded compounds have generally lower melting and boiling points, are not hard, are less conductive etc.


Covalent compounds display which of these properties?

Covalent compounds are neutral. Covalent compounds share electrons. apex:)


Is the covalent melting and boiling point high or low?

The covalent melting and boiling points are generally lower than those of ionic compounds due to weaker intermolecular forces between covalent molecules. These forces include London dispersion forces, dipole-dipole interactions, and hydrogen bonding. The actual melting and boiling points vary depending on the specific molecules involved.