# What are three types of chemical bonds? Do all compounds contain a single type of bond?

Aug 5, 2018

The three types of chemical bonds?

#### Explanation:

$\text{1. the covalent bond;}$ electron density is SHARED between atoms to allow close approach of the bound nuclei.

$\text{2. the ionic bond;}$ electrons ARE TRANSFERRED between atoms (typically a metal and a non-metal) to form discrete charged particles that are held together by electrostatic attraction in an ionic lattice.

$\text{3. the metallic bond;}$ the valence electrons of a metal centre are delocalized in a body of close-packed metal atoms. This gives rise to the familiar description of metallic bonding as $\text{positive ions in an electron sea}$. Metallic bonding gives rise to charactersitic metal properties: malleability; ductility; conductivity to heat and electricity.

Some compounds, i.e. compound ions, e.g. $N {a}_{2} C {O}_{3}$, $N {a}_{2} H P {O}_{4}$ consist of ionic bonding between the charged particles, $N {a}^{+} , C {O}_{3}^{2 -} , H P {O}_{4}^{2 -}$...BUT WITHIN the carbonate and biphosphate ions, the ATOMS are COVALENTLY bound.