(a)(i) State the two main processes involved in the manufacture of oxygen from air
(ii) Name the type of chemical bonding which exists between oxygen atoms in a molecule of oxygen
(b) What term is used to describe the relationship between oxygen and ozone (O\(_3\))?
(a)(i) Liquefaction of air and fractional distillation of liquid air
(ii) covalent bonding.
(b) ozone is an allotrope of oxygen.
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