Boron (B)

About Boron

Boron is a chemical element with the symbol B and atomic number 5, meaning every atom has 5 protons in its nucleus. It is classed as Metalloid and is a solid at room temperature. Its atomic mass is about 10.81 atomic mass units (u).

On the periodic table, Boron sits in group 13, period 2, which determines how many electron shells it has and how it tends to react with other elements.

Uses of Boron

In daily life and industry, Boron is used for Heat-resistant glass, detergents. These uses are closely tied to the typical properties of elements in the Metalloid category.

Electron Structure of Boron

Using a simplified electron shell model (at most 2 electrons in the first shell, 8 in the second, 18 in the third, and so on), Boron has 2 electron shells, with an approximate arrangement of 2, 3 electrons from the innermost shell to the outermost. This is a simplified learning model, not the full electron configuration that accounts for the s, p, d and f subshells.

Explore Other Elements

Want to see another element or try the element symbol quiz? Go back to the Interactive Periodic Table to explore all 118 chemical elements.

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