Yes, it is. In fact, it is the closest planet to the sun.
inner planet.
Mars is an inner planet, as is Mercury, Venus, and Earth.
Mercury is an inner planet. It does not have any moons.
Mercury is an inner planet because it is the closest one to the sun. Inner planets: Mercury Venus Earth Mars
Mercury
Mercury is an inner planet because it is the closest one to the sun. Inner planets: Mercury Venus Earth Mars
Mercury is the innermost planet. Therefore, it would be an inner planet.
mercury
mercury
Mercury
mercury
Mercury.