Question

Which statement about carbon is correct? Please choose the correct answer from the following choices, and then select the submit answer button.

A. The spatial orientation of carbon's bonds results in a carbon atom resting in the center of a three-dimensional structure referred to as a hexahedron.
B. Carbon is not only the most abundant element on Earth; it is believed to be the most abundant element in the universe.
C. Each of carbon's three valence electrons shares a bond with another atom.
D. Carbon-carbon single bonds allow for free rotation around the bond; carbon-carbon double bonds do not allow for free rotation around the bond.
E. Single bonds between carbon atoms are typically shorter than double bonds between carbon atoms.

Answer 1

Answer:

D

Explanation:

A is not the correct answer because the spatial orientation is called a tetrahedron, not a hexahedron

B is not the correct answer because the most abundant element in the universe is hydrogen

C is not the correct answer because carbon has four valence electrons, not three

E is not the correct answer because single bonds are longer than double bonds due to the strength of the bond

By process of elimination, D is the correct answer.