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. More »

Beryllium has two valence electrons. Valence electrons are those electrons that are capable of participating in the formation of chemical bonds with other atoms. These chemical bonds occur through the sharing of these tw... More »

Beryllium has five neutrons, four electrons and four protons. Its atomic number is 4, and its chemical symbol is Be. This element belongs to the second group on the periodic table, which contains the alkaline earth metal... More »

Beryllium has five neutrons, four electrons and four protons. Its atomic number is 4, and its chemical symbol is Be. This element belongs to the second group on the periodic table, which contains the alkaline earth metal... More »

Beryllium nitrate, also called beryllium dinitrate, is the ionic beryllium salt of the nitric acid HNO3. Its molecular formula is Be(NO3)2, and its molecular weight is 133.021982. More »

www.reference.com Science Chemistry

Beryllium has two valence electrons. Valence electrons are those electrons that are capable of participating in the formation of chemical bonds with other atoms. These chemical bonds occur through the sharing of these tw... More »

Helium is an element of the periodic table that is composed of subatomic particles including protons, neutrons and electrons. The atomic number of helium is 2, which means it contains two protons and two electrons. The m... More »