Answers

2016-01-19T23:26:20+05:30
Elementary molecules are the atoms.
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2016-01-19T23:32:18+05:30
Diatomic molecules are molecules composed of only two atoms, of either the same or different chemical elements. The prefix di- is of Greek origin, meaning "two". If a diatomic molecule consists of two atoms of the same element, such as hydrogen (H2) or oxygen (O2), then it is said to be homonuclear.
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