Which of the following statements is correct?

The bond angle is 120° because carbon is ${\mathrm{sp}}^2$ hybridized.

In eclipsed conformation, hydrogen atoms of the two carbon atoms are closer to each other, hence more repulsive interactions resulting in the higher potential energy.

The correct name is 3-ethyl-5-isopropyl-4-methyloctane. Isopropyl comes before methyl.

Alkanes are souble in non-polar solvents such as benzene, ether and chloroform