Jupiter is the Gas planet
Gas Giants
Mercury is the only metal in the liquid state.
the planet is a solid but mercury is a gas as well
mercury does have a solid surface
Solid, iron core
Mercury, the planet is a solid rocky body. Mercury, the element is a metal, liquid at room temperature.
Mercury, Venus, Earth and Mars.
I don't think there is such a thing as a planet having a gas core. Even the gas giants have some solid material at their centers.
Mercury, Venus, Earth and Mars.
Mercury has a rocky surface, it is the closest planet to the sun in the solar system (however not the hottest). There are only 4 gas giants in our solar system, (Jupiter, Saturn, Neptune and Uranus) how ever astronomers have discovered many other gas planets orbiting other stars in the galaxy. Hope this helps you:)
Planets are formed when the surface phase changes to a solid material. All planets were once stars.