Question

1- Which of the following has one double covalent bond?

A- C2H6

B- C3H6

C- C2H2

D- C3H4
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Answer 1

C2H6

Step-by-step explanation:

Carbon forms bonds with itself, this property is called catenation and Carbon also has a tendency to form multiple bonds, double or triple. ... For C2H6, carbon forms double bond with the other carbon, and each carbon has three hydrogen atoms attached to it.