Beryllium has four electrons, four protons and five neutrons. Beryllium is classified as an alkaline earth metal. This element's atomic weight is 9.012 grams per mole.
Using a periodic table, the number of electrons is found by finding the atomic number of beryllium, which is four. The atomic number is equal to the number of protons of a given element. However, the number of protons is also the same as the number of electrons for neutral atoms.
Some other facts about the mineral beryllium is that its melting point is 2348.6 degrees Fahrenheit, and it has a density of 1.85 grams per cubic centimeter. In nature, beryllium is present in beryl and bertrandite.