Chemistry
With reference to elements — define the term 'molecule'. Give two examples each of a monoatomic, diatomic & polyatomic molecule.
Elements, Compounds & Mixtures
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Answer
Atoms of the same element or different elements combine to form a molecule. It is the smallest particle of a substance which can normally exist independently & can retain, the physical & chemical properties of the substance.
Examples :
Monoatomic molecule — Sodium [Na] and Magnesium [Mg]
Diatomic molecule — Hydrogen [H2] and Oxygen [O2]
Polyatomic molecule — Ozone [O3] and Tetra phosphorous [P4]
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