The term "10" is unclear in this context. If you are referring to the element with the atomic number 10, that would be neon (Ne), which is a noble gas. Neon is relatively rare in the Earth's atmosphere, making up about 0.0018% of it by volume.
Aluminum (Al), on the other hand, is the third most abundant element in the Earth's crust, comprising about 8% of its weight. Therefore, aluminum is much more abundant and less rare than neon.
If "10" refers to something else, please clarify, and I'll provide the appropriate comparison.
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