Salt Questions · Science, chemistry & environment
What is the difference between ionic and covalent bonds in salt?
Short answer
Salt (NaCl) is held together by ionic bonds, not covalent ones. In an ionic bond, sodium gives one electron to chlorine, creating a positive sodium ion and a negative chloride ion that attract each other. In a covalent bond, as in water (H₂O), atoms share electrons instead. Ionic compounds like salt form crystals and dissolve into ions.
Ionic vs covalent bonds
Ionic bonding in salt
Sodium has one loosely held outer electron; chlorine needs one to fill its outer shell. Sodium transfers its electron to chlorine, forming Na+ and Cl−. Their opposite charges attract strongly in every direction, building a crystal lattice rather than separate molecules.
Covalent bonding
Atoms with similar pull on electrons, such as hydrogen and oxygen, share pairs of electrons and form discrete molecules.
How the difference shows
| Melting point | Salt: 801 °C. Many covalent compounds melt far lower. |
|---|---|
| In water | Salt splits into ions and conducts electricity; sugar (covalent) dissolves as whole molecules and doesn't. |
| Structure | Salt is a lattice; water is separate molecules. |
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Cite this page
For school projects and reports. Teachers often prefer the original sources too: see the list below.
The Salt Almanac. (2026, November 8). What is the difference between ionic and covalent bonds in salt. https://saltalmanac.com/answers/what-is-the-difference-between-ionic-and-covalent-bonds-in-salt
“What is the difference between ionic and covalent bonds in salt.” The Salt Almanac, 8 Nov. 2026, saltalmanac.com/answers/what-is-the-difference-between-ionic-and-covalent-bonds-in-salt. Accessed [today's date].
“What is the difference between ionic and covalent bonds in salt.” The Salt Almanac. Last modified November 8, 2026. https://saltalmanac.com/answers/what-is-the-difference-between-ionic-and-covalent-bonds-in-salt.
Original sources
- Wikipedia. Ionic bonding. https://en.wikipedia.org/wiki/Ionic_bonding
- Wikipedia. Covalent bond. https://en.wikipedia.org/wiki/Covalent_bond