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In Chemistry / High School | 2014-11-11

Why do ionic compounds have high melting points?

Asked by Logi

Answer (3)

An ionic compound is arranged in a organised lattice structre that allows for the greatest electrostatic attraction between the opposite charged atoms and the lesser electrostatic repulsion between the same atoms, where the atoms are as closely packed as possible. So the amount of energy (in form of heat) needed to break the electrostatic attraction between the atoms, so this means that ionic compounds have very high melting points.

Answered by RhysH | 2024-06-10

because of its bonds
Ionic bonds are very strong - a lot of energy is needed to break them. So ionic compounds have high melting and boiling points.

Answered by nirusan1997 | 2024-06-10

Ionic compounds have high melting points due to the strong electrostatic forces holding the cations and anions together in a stable lattice structure. These forces require a significant amount of energy to break, resulting in high melting points for ionic substances. For instance, sodium chloride melts at about 801°C.
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Answered by RhysH | 2025-06-17

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