Air
The least small and least rocky planet is probably Saturn. Saturn - as a whole planet - has a density less than water, meaning that if you could find a lake big enough to put it in, Saturn would float!
1% of Mercury is water.
Mercury's surface is heavily cratered, with plains, scarps, and ridges. It has a rocky terrain with high temperature variations between day and night due to its lack of atmosphere to retain heat. The surface also contains volcanic plains and evidence of past tectonic activity.
I think of the word terrestrial as referring specifically to the earth. But in the context of your question I think you are referring to a rocky planet as opposed to a gas giant. Venus is a rocky planet, or terrestrial to use your term. There are 4 rocky planets: Mercury, Venus, Earth and Mars. Don't let the water on the Earth confuse you with the term rocky. The water is extremely shallow in astronomical dimensions. The gas planets, often called gas giants, are Jupiter, Saturn, Uranus, and Neptune. Pluto is no longer considered a planet and I do not know which category it would fall into.
No, there is not enough water on Mercury for rain.
Mercurcy is an air planet!!=]
The planet Mercury has no moons as far as we know.
No. Mercury is a geologically dead planet. It has no volcanoes, not atmosphere, and no water.
Mercury is a small, rocky planet with very little atmosphere. It is not known to have significant natural resources like water, minerals, or organic materials in abundance due to its proximity to the sun and extreme temperatures. The surface mainly consists of rocks and metals like iron and nickel.
Every planet in the solar system except Mercury has an atmosphere, and all but Mars and Mercury have clouds, but only Earth has liquid water.
The planet Mercury has no food, no water, and offers no shelter for human beings.
yes!! mercury is a rocky planet.lets just make this easier. i have recently learned that the first four planets are rocky and the last four are gaseous that makes mercury venus earth and mars rocky and Jupiter Saturn uranus and neptune gaseous. i have back up by my teachers and if you look up the question "which planets are rocky?" they have given the same answer.