The Earth has the greatest average density, of all the planets.
inner core
inner planet
Mercury comes in 2nd place - average density (5.44 g/cm3 == ==
Mercury has the second greatest density (behind Earth), with a density of 5.43 g/cm3 (5430 kg/m3).
inner planet.
Mars is an inner planet, as is Mercury, Venus, and Earth.
Mars is an inner planet.
Jupiter, Saturn, Uranus, and Neptune is not inner planets. They are all outer planets.
Inner.
inner planet
It is an inner planet.
Venus is an inner planet