The structures shown below represent .......

Which of the following hydrides is capable of showing conformations?

Which of the following conformations will be the most stable?

Give the difference between eclipsed ethane and staggered ethane.

The most stable conformation of $2,3-$dibromobutane is

On Pluto,where everything is frozen,astronauts discovered two forms of butane: gauche and anti. Assuming that there are no rotations around single bonds,which statement about the two forms is correct?