No.
Mercury is not the coldest planet because it has more solar radiation than all of the other planets. This is because it is closer to the Sun. However, Mercury is not the hottest planet in the Solar System. See related question.
The coldest planet in the solar system is Pluto, which is considered as a dwarf planet.
Uranus is the coldest planet.
The coldest planet is Neptune.
The coldest planet in our solar system is Uranus.
Mercury is the closest to the sun. Pluto is the very last planet in our solar system so that's what makes it the coldest planet.
No, Mars is not the coldest planet, Uranus is.
Actually Venus is the hottest planet in the solar system because of it's thick atmosphere that taps the heat below the atmosphere. Pluto is the coldest planet because it is the farthest away from the sun.
The first planet in the solar system is Mercury
mercury
Neptune is farthest from the SunUranus is the coldest planet in our solar system
Mercury is small and it's night side gets cold... Pluto is very cold but it's a dwarf planet.