BondingIonic bonding

When a metal element reacts with a non-metal element an ionic compound is formed. When a non-metal element reacts with a non-metal element a covalent bond is formed.

Part of Chemistry (Single Science)Bonding, structure and properties

Ionic bonding

When metals react with non-metals, are transferred from the metal atoms to the non-metal atoms, forming ions. The resulting compound is called an ionic compound.

Reactions between metals and non-metals include:

  • sodium + chlorine → sodium chloride
  • magnesium + oxygen → magnesium oxide
  • calcium + chlorine → calcium chloride
  • lithium + oxygen → lithium oxide

In all of these reactions, the metal atoms give electrons to the non-metal atoms. The metal atoms become positive ions and the non-metal atoms become negative ions.

There is a strong force of attraction between these oppositely charged ions – this is called an ionic bond.

The slideshow shows ionic bonds being formed in sodium chloride, magnesium oxide, calcium chloride and lithium chloride.

Image gallerySkip image gallerySlide 1 of 8, Sodium atom with 11 dot electrons and chlorine atom with 17 cross electrons.,
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