Is Boron a Metal or Nonmetal?

Science Picture Co/Collection Mix: Subjects/Getty Images

Boron is neither a metal nor a nonmetal; instead, it is classified as a metalloid or a semimetal. Boron is the chemical element with the symbol B and atomic number 5. Its molecular weight is 10.81 grams per mole, and its melting point is 2076 degrees Celsius.