Question

Which of the following covalent compounds does not exist?1 1)02
2)H2
3)N2
4)C2
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Answer 1

Answer:

4. C2 because carbon never do selaf catenation in diatomic form

Answer 2

Answer:

4) C2

Explanation:

Diatomic carbon or dicarbon (C2) exists only at very high temperatures in carbon vapour produced, for example, in electric arcs, in comets, stellar atmospheres and the interstellar medium, and in blue hydrocarbon flames.