The lewis dot model of a molecule is shown. a molecule is shown with atoms arranged in the order hcch. there are three horizontal lines connecting the two c atoms. the c atom on the left is connected to an h atom by a single horizontal line. the c atom on the right is connected to the other h atom by a single horizontal line. based on the model, which of the following is true? each carbon has three lone pairs of electrons on it. the octet of carbon atom remains incomplete in the molecule. the two carbon atoms share a total of six electrons with each other. the difference between the electronegativity of carbon and hydrogen is greater than 1.7.