No.
well technically its not a planet no more but Pluto
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.
Mercury is the inner planet that gets the coldest. This is because it has virtually no atmosphere to retain heat, resulting in extreme temperature variations between its day and night sides. Nighttime temperatures on Mercury can drop to around -290 degrees Fahrenheit (-180 degrees Celsius).
Mercury is an extreme planet. it is fastest of all the planets. also, it is one of the hottest and coldest planet too.
Saturn. It is the furthest from the Sun
Because it is has the hottest and coldest temperatures.
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.
Mercury is the hottest planet because it is the closest planet to the sun, and therefore receives more direct sunlight. Neptune is the coldest planet because it is the farthest planet from the sun, receiving very little sunlight and having a thick atmosphere that traps heat, resulting in cold temperatures.
Hottest - Venus. Mean Temperature is 462°C Coldest - Neptune. Mean Temperature is -214°C Though mercury comes very close to being the hottest and the coldest. As mercury has no atmosphere, the side which faces away from the sun reaches -210°C. And the side facing the sun reaches 427°C. At one time, the coldest planet would be Pluto, but Pluto is no longer a planet.
It Isn't Earth of couse! It's Maybe Jupiter, It Might Be I'm Not So Soure. But You Can Try Google.com.au/What+Is+The+Coldest+Planet
Venus is hottest Mercury is second hottest Earth is third hottest Mars is fourth hottest Jupitar is fourth coldest Saturn is the third coldest Uranus is the second coldest Neptune is the coldest