Venus.
Mercury, the known planet that orbits closest to the sun, has no atmosphere.
Venus
murcury
Mercury is the only inner planet with no significant atmosphere. Its thin exosphere consists mainly of oxygen, sodium, hydrogen, helium, and potassium.
Mars
EARTH!!!!!!!!
Earth is an inner planet because it has an atmosphere. Earth Rocks!
the most gaseous inner planet would be Venus, also the hottest planet
Mars is a solid planet with a rocky surface. It has a thin atmosphere composed mainly of carbon dioxide.
Venus.
Of the inner four terrestrial planets in our solar system - Mercury, Venus, Earth and Mars - Mercury has almost no atmosphere.
inner planet.