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? (5 points)

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.

                   Option-C (The two carbon atoms share a total of six electrons with each other) is the correct answer.

Explanation:

                     According to statement the compound explained is Acetylene. It is an unsaturated hydrocarbon and belongs to class of Alkynes containing Carbon-Carbon triple bonds.

                     The lewis structure of Acetylene is attached below. As a single covalent bond is formed by sharing of two electrons therefore, the three bonds (triple bond) between the two carbons atoms will contain six electrons in total.

                     First option is incorrect because there is no lone pair of electrons on either Carbon or hydrogen atoms.

                     Second option is incorrect because the octet of both carbon atoms is complete.

                     Fourth option is incorrect because the electronegativity difference between carbon and hydrogen atoms is 0.4 and hence, the bond is nonpolar in nature.

catya your not at all which answer i've seen you do this on another question!

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b