None. By definition a rocky planet is mostly rock. Venus, by far, has the densest atmosphere of the terrestrial planets, but the planet itself is mostly rock and is similar in composition to Earth.
The largest planet is Jupiter, with an atmosphere made mostly of hydrogen.
the planet we live in
Neptune (NovaNet) There's something wrong here. Neptune is mainly a hydrogen atmosphere. Earth is the planet with a mainly nitrogen atmosphere, but the coldest is Neptune.
Mars, Venus's atmosphere is thicker than Earth's. Much thicker.
Venus has 96 percent of carbon dioxide
The largest planet is Jupiter, with an atmosphere made mostly of hydrogen.
Venus
the planet we live in
Mars is known as the red planet. The planet itself is mostly rock. It is the thin atmosphere that is mostly carbon dioxide.
Neptune (NovaNet) There's something wrong here. Neptune is mainly a hydrogen atmosphere. Earth is the planet with a mainly nitrogen atmosphere, but the coldest is Neptune.
Earth
Mars is a rocky planet with very little atmosphere.
Mars, Venus's atmosphere is thicker than Earth's. Much thicker.
Mercury
Venus has 96 percent of carbon dioxide
Planet Earth - about 80%.
It's rocky, but it has an atmosphere made up mostly of carbon dioxide and has clouds made of sulfuric acid.