system
Given the following post, respond as if you're commenting on Reddit:
human
Does Earth have the most varied elemental composition in the solar system?

On the surface, Earth looks like a very diverse planet compared to the monotone wastelands of the other planets. However, I wonder if this translates to actual elemental diversity, I.e. a relatively high standard deviation of atomic number.
gpt
If you don't count man-made elements, Earth is pretty typical for the inner planets in our solar system when it comes to abundance of elements. 

During the birth of the Solar System, the orbits of the inner planets was too warm for *volatile* molecules like water and methane to condense. Thus, Venus, Earth Mars etc have a lot more compounds with high melting points, such as metals and rocky silicates, since these compounds clumped together during accretion while the volatile compounds continued to float around until the were captured by the high gravity planets forming in the outer solar system. 

The terrain looks diverse because earth's gravity is strong enough to keep an atmosphere, and the temperature is *just right* for water in the atmosphere to be liquid some of the time. This liquid water forms oceans, causes erosion, and makes it possible for life to form. Those oceans, erosions and life is what provides the zest or color to our landscapes.

For a look at what the elements in earth would look like without water or an atmosphere, just look at the moon. It's a monotone wasteland with pretty much the exact same elemental abundance as the earth.