Which boron isotope is more common in nature?

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A labeled diagram of the periodic table entry for boron shows its atomic number 5, symbol B, electron configuration, atomic weight range, and classification as a solid, weakly acidic, other nonmetal with a rhombohedral crystal structure at room temperature. — boron Properties of boron.

In nature, boron exists as a mixture of two stable isotopes: boron-10 and boron-11. Of these, boron-11 is the more common isotope, accounting for approximately 80.1 percent of naturally occurring boron, while boron-10 makes up the remaining 19.9 percent.12