Boron is a metalloid element with the atomic number 5 and chemical symbol B. It has properties of both metals and nonmetals. Boron is found in nature in compounds such as borax and boric acid but not in its pure form. It is essential for plant growth and also has many industrial uses. Boron is used in making heat-resistant glass, fiberglass, detergents, ceramics, and even in bulletproof vests. Because of its ability to absorb neutrons, boron is also used in nuclear reactors as a radiation shield.
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