It is a rocky planet or terrestrial planet. Any planet before Mars is terrestrial and any planet after Mars is a gas giant.
Mercury is a rocky planet, just like all the terrestrial planets: Mercury, Venus, Earth and Mars.
Mercury is a rocky planet and is too close to the sun to retain much of an atmosphere, much less become a gas giant.
Mercury doesn't have a gas giant.
rocky
Jupiter is a gas giant
Saturn is a gas giant.
Gas giant planet.
Jupiter is a gas giant
All of the inner planets are rocky planets: Mars, Earth, Venus, and Mercury
its a rocky planet
Is earth a gas giant or a rocky terrestrial
Jupiter is a gas giant.