Which planet is placed between the Earth and Mercury ?

Mercury is the first planet in our solar system and the closest to the sun. Planet Earth where we all live is the third planet that orbits around the sun. Between these first and third planet with extreme difference between atmosphere and chemical composition , which planet lies between these two planets.
Mercury is the first planet in our solar system and the closest to the sun. Planet Earth where we all live is the third planet that orbits around the sun. Between these first and third planet with extreme difference between atmosphere and chemical composition , which planet lies between these two planets.