- Allotropy: The existence of two or more alternative forms of the same element in the same physical state.
- Two allotropes of oxygen are:
- Molecular oxygen (O2), also known as diatomic oxygen.
- Ozone (O3), also known as triatomic oxygen.
|Ozone has a higher molecular mass than oxygen, and thus requires more energy in order to change state
|(Same as for melting point, above)
|About the same as air
|About 1.5 times that of air
|Ozone is a larger molecule than oxygen
|Solubility in water
|Considerably more soluble than oxygen
|Ozone is slightly polar, while oxygen is non-polar
|It is much easier for ozone’s single coordinate covalent bond to be broken than oxygen’s double covalent bond
|(Same as for stability, above)
Properties of molecular oxygen and ozone