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Ionic compounds have strong bonds holding the crystal lattice together that are due to the attraction between the oppositely charged cations and anions. Covalent compounds which are made up of discrete molecules (not giant molecular compounds like silica) have only weak intermolecular forces holding the solid form together and therefore these solids are easier to "break up" with thermal energy.

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11y ago
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11y ago

Ionic compounds are crystalline solids at room temperature. It takes a lot of energy to collapse that crystalline lattice structure. This results in high melting points, like around 800 degrees Celsius for salt (sodium chloride.)

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13y ago

Melting requires the breaking of intermolecular forces between particles. Ionic bonds are incredibly strong and difficult to break apart, thus giving ionic solids high melting points.

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11y ago

Because they have strong electrostatic force of attraction between the oppositely charged ions.

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11y ago

Ionic compounds

have higher boiling points than molecular compounds because the bonds that hold them together are stronger and so need more energy to break them.

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13y ago

they have high melting and boilig point due to the strong ionic bonds.

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13y ago

Since ionic compounds form a crystal lattice which is very strong while covalent bonds have weak intermolecular forces therefore requiring less energy to melt it.

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Q: Why do solid ionic compounds have high melting points?
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Related questions

Which solid is more likely to have the lowest melting point an ionic solid or molecular solid?

Molecular Solids have a lower melting point


Compared with ionic compounds solid molecular compounds generally?

a lower melting point


How does the arrangement of ions in a solid help to explain the high melting points of most ionic compounds?

catfish


What best describes the properties of ionic compounds?

There is not a statement available so it is difficult to answer this. Some properties of ionic compounds are high melting points, solid in room temperature, and they are brittle.


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.


What statement best describes the properties of ionic compounds?

There is not a statement available so it is difficult to answer this. Some properties of ionic compounds are high melting points, solid in room temperature, and they are brittle.


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.


Can you list properties of ionic compounds?

-Solid at room temperature -Very high melting points -Conducts electricity when disolved in water


Is a solid with a melting point of 800 degrees Celsius ionic or molecular?

The melting point of a compound cannot determine the bonding structure. As an example, both diamond and sodium chloride have higher melting points than 800 centigrade but are covalent and ionic compounds respectively.


Why do molecular compounds have low melting points and low boiling points relative to ionic substance's?

The melting points and boiling points of molecular covalent compounds (ones with discrete molecules) are lower than ionic solids and giant molecule covalent compounds like (silica, SiO2) because the forces that attract them together in the solid and the liquid states (van der waals, hydrogen bonding and dispersion forces) are weaker than ionic (or covalent) bonds.


Why do molecular compounds have low melting points and low boiling points relative to ionic substances?

The melting points and boiling points of molecular covalent compounds (ones with discrete molecules) are lower than ionic solids and giant molecule covalent compounds like (silica, SiO2) because the forces that attract them together in the solid and the liquid states (van der waals, hydrogen bonding and dispersion forces) are weaker than ionic (or covalent) bonds.


What is the Melting point of ionic compounds?

This is a phase change from solid to liquid which occurs at a fixed temperature when the ionic lattice breaks down. In general ionic compounds are high melting.