helping kids learn

What is an ionic compound?

What is an ionic compound?

 An ionic compound is made up of a metal and non-metal. The elements produce oppositely charged ions which are attracted to one another in a crystal lattice structure.

 The ionic compound sodium chloride, commonly called table salt, has the chemical formula NaCl. This means that sodium ions, Na+ are combined with chloride ions, Cl- in a ratio of 1:1

An ionic compound is made up of a metal and a non-metal.

Metal Non metal Ionic compound Chemical formula
Sodium Chlorine Sodium chloride NaCl
Lithium Hydrogen Lithium hydride LiH
Magnesium Oxygen Magensium oxide MgO
Aluminum Oxygen Aluminum oxide Al2O3

In the formation of ionic compounds there is a transfer of electrons from a metal to a non-metal.

Metals lose electrons to produce positive ions. eg. sodium ion, Na+

Na → Na+ + e

Non metals gain electrons producing negative ions. eg. chloride ion, Cl-

Cl + e → Cl

An ionic bond is the electrostatic attraction between two oppositely charged ions. eg. Na+ and Cl-

Na+ + Cl → NaCl

Metal and non-metal ions combine with one another to produce an orderly arrangement of ions called a crystal lattice. The crystal has an overall neutral charge.

The ionic compound sodium chloride or NaCl is made up of sodium, Na+ and chloride, Cl- ions in the ratio of one to one or Na+: Cl- = 1:1

The metal sodium reacts with chlorine to produce the compound sodium chloride.

Sodium + Chlorine → Sodium chloride

Na + Cl → NaCl

In the reaction between sodium and chlorine an electron is transferred between the atoms producing oppositely charged ions. These ions are attracted to one another producing an ionic bond.

During the reaction energy is released.