Neptune does and it takes 164.8 years to do so.
Neptune takes the longest to revolve around the sun.
If you still consider Pluto a planet, than Pluto takes the longest time to move around the sun. If not, Neptune takes the longest amount of time.
Mars takes the longest of the inner planets.
Pluto
Technically, since Pluto is no longer a planet, but a dwarf planet, Uranus is the planet that takes the longest to orbit the sun.
As it's the furthest planet out, Neptune takes the longest to orbit our sun, taking some 165 years to do so.
Neptune is the furthest planet from the sun, taking the longest time to complete one orbit, 164.79 years in total.
Approxiamtely 6756313285.666678487m
Neptune.
Neptune takes the longest as it is the farthest away.
Venus takes the second longest time to orbit the sun, with an orbital period of about 225 Earth days.
This would depend on the planet, earth takes a year to go round the sun but that is because we named the time it takes for us to go round the sun a "year". The closer to the sun a planet is the less time it takes to circle it.