'When liquefied, this form of oxygen with 3 atoms in each molecule is deep blue'
ozone
GASES: When liquefied, this form of oxygen with 3 atoms in each molecule is deep blue
When liquefied, this form of oxygen with 3 atoms in each molecule is deep blue
When liquefied, this form of oxygen with 3 atoms in each molecule is deep blue
GASES
ozone
GASES