The carbon atoms on ethane are A.sp2 hybridized B.sp3 hybridized C.sp4 hybridized D.sp hybridized

The carbon atoms in ethane are sp3 hybridized.

Here's why:

1. Ethane has the molecular formula C2H6. Each carbon atom is bonded to three other hydrogen atoms and the other carbon atom.

2. The hybridization of an atom in a molecule can be determined by the number of atoms bonded to it and the number of lone pairs it has.

3. In ethane, each carbon atom is bonded to four other atoms (three hydrogen atoms and one carbon atom), and it has no lone pairs.

4. Therefore, the carbon atoms in ethane are sp3 hybridized. This means they use one s orbital and three p orbitals to form four hybrid orbitals, each of which forms a sigma bond with another atom.

So, the correct answer is B. sp3 hybridized.