Draw a bond-line structure for each constitutional isomer with a molecular formula of c2h4o. Include lone pairs in your answer.

There are two constitutional isomers of the formula   which is mentioned in the question.

Explanation:

Constitutional isomers or structural isomers are the type of isomers which have same molecular formula but differ in skeletal structure due to difference in arrangement of atoms and bonds.

Two possible structural isomers of have been drawn in the figure below. In the both structures the oxygen atom forms two bond around itself with the neighboring carbon or hydrogen atoms. We know that there are six electrons in the outermost orbit of oxygen atom so after forming two bonds the rest electrons will exist in two pairs called lone pair of electrons.