Ionic Bond and Salt Properties

Also called

ionic bond · electrovalent bond · sodium chloride · NaCl · transfer of electrons · cation · anion · crystal lattice · ionic compound properties · high melting point · conducts electricity when molten · electrolyte · sodium ion · chloride ion · आयनिक बंध · सोडियम क्लोराइड · विद्युत संयोजक बंध

Topics

• A sodium atom (2, 8, 1) loses its one outer electron to become Na⁺ with a full outer shell of 8.
• A chlorine atom (2, 8, 7) gains that electron to become Cl⁻, also reaching a stable 8 in its outer shell.
• The bond is the strong electrostatic attraction between the oppositely charged ions: an ionic bond.
• Ions do not form single molecules; they pack into a regular crystal lattice, each Na⁺ surrounded by Cl⁻ and vice versa.
• Breaking the many strong attractions needs a lot of heat, so ionic compounds have high melting and boiling points.
• Sodium chloride melts at about 801 °C and is hard and brittle; it dissolves well in water but not in petrol or kerosene.
• Solid NaCl does not conduct electricity because its ions are locked in place in the lattice.
• Molten NaCl, or its solution in water, conducts: the free ions move, Na⁺ to the cathode and Cl⁻ to the anode.

About this model

A GLB file of about 478 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Model, science and animation: Lably (built procedurally with three.js; no downloaded meshes). | CC BY 4.0. Original geometry and animation made for Lably.

More in Science

1

1 m reflecting telescopeClass 6–123D model

1 m reflecting telescopeClass 6–123D model

A

Aerobic vs Anaerobic RespirationClass 103D model

Aerobic vs Anaerobic RespirationClass 103D model

A

Alkanes Grow and IsomersClass 103D model

A

Amoeba and Paramecium FeedClass 103D model