Mercury's density implies that 65% of the planet is metal-rich core, thus it would be the most metal-rich of the terrestrial planets.
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Venus is considered a terrestrial planet because it has a solid rocky surface, similar to Earth. Terrestrial planets are characterized by having a dense, metal-rich core and a rocky mantle and crust, which distinguishes them from gas giants like Jupiter or Saturn.
The most iron-rich planet in the solar system is Mercury. It has a large iron core, making up about 65% of its mass.
Mercury is the planet that is rich in iron. Its core is thought to be composed primarily of iron, which gives it a strong magnetic field.
Mars is known as the red planet due to its iron oxide (rust) rich surface, giving it a reddish appearance.
The planet most likely has a rocky composition rich in iron oxide, giving it a reddish-yellow appearance. This could indicate high levels of rusted iron minerals on its surface. The presence of iron oxide suggests past geological activity or weathering processes on the planet.