Mercury is the only inner planet with no significant atmosphere. Its thin exosphere consists mainly of oxygen, sodium, hydrogen, helium, and potassium.
Venus.
Venus
murcury
Mars
EARTH!!!!!!!!
Negative, not only do the inner planets have atmospheres, but the outer planets also have atmospheres. The masses of the outer planets are great, enough easily to hold an atmosphere. In fact it's Mercury, an inner planet, that has almost no atmosphere. True, Mercury has a less mass and the closeness to the sun make it impossible to hold on a atmosphere. As matter in fact, Mars had a atmosphere, but the solar wind had almost eaten all the atmosphere that Mars had.
Earth is the only known planet with an oxygenated atmosphere.
Earth is an inner planet because it has an atmosphere. Earth Rocks!
It would have to be Earth, since it is the only inner planet with oceans.
the most gaseous inner planet would be Venus, also the hottest planet
Uranus... interestingly, most of Uranus's atmosphere rotates faster than the interior; the planet's fastest winds blow portions of the atmosphere around the planet in only 14 hours.Uranus.