Venus .
The atmosphere of Venus is made up of primarily of carbon dioxide. Thick clouds of sulphuric oxide and carbon dioxide completely cover the planet.
Near the surface: Sulphuric Acid vapor. For most of the atmosphere above the surface: Carbon Dioxide.
Your thinking of Venus which does have a high Co2 atmosphere and sulphuric rain. Mars has very little atmosphere.
Venus has an atmosphere of 96% carbon dioxide. It is also completely covered with clouds consisting of droplets of concentrated sulphuric acid. These cloud tops also show traces of sulphur dioxide, solid sulphur and chlorine. The surface temperature is 460oC (860oF).
Venus has an atmosphere made up of hot swirling clouds of carbon dioxide, which create an intense greenhouse effect and contribute to its extreme surface temperatures.
No, thunderstorm clouds are not made up of tiny droplets of carbon dioxide. Thunderstorm clouds are composed of water vapor that has condensed into water droplets or ice crystals. Carbon dioxide is a colorless gas and is not typically found in clouds in the form of droplets.
Venus has a thick atmosphere composed mainly of carbon dioxide with clouds of sulfuric acid.
Venus.
Ozone, water vapor, carbon dioxide, clouds, dust, and other gases absorb energy in the atmosphere.
Ozone, water vapor, carbon dioxide, clouds, dust, and other gases absorb energy in the atmosphere.
Venus' atmosphere consists mostly of carbon dioxide, with clouds containing of sulfuric acid. There are also compounds of chlorine and fluoride.
The planet you are describing matches the characteristics of Venus. Venus is nearly the same size as Earth, has no moons, and its atmosphere is mostly composed of carbon dioxide, with thick clouds of sulfuric acid.