Beryllium was to play a historic role in advancing our knowledge of atomic theory since it helped uncover the fundamental particle, the neutron. Beryllium (Be) is a light silver-gray metal that has the atomic number 4 in the periodic table. Beryllium is widely used to alloy with other metals such as copper and is used in springs and electrical equipment due to its non magnetic nature. Be has two electrons in its outermost orbital and its combining capacity or valency is two. Which comparison is best supported by this information? Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. Beryllium is the only monoisotopic element with an even atomic number, but it has an odd mass number like all other monoisotopic elements. The chemical symbol for Beryllium is Be.. Atomic Mass of Beryllium. Beryllium is a chemical element with symbol Be and atomic number 4. The alkaline earth metals are six chemical elements in group 2 of the periodic table.They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). It is a low-density metal and have a density of around 1.85 g/cm 3 at room temperature. Beryllium, chemical element that is the lightest member of the alkaline-earth metals of Group 2 of the periodic table. A: They are in the same group because they have similar atomic masses, but they are in different periods because they have different chemical properties. Beryllium metal was isolated in 1828 from beryllium chloride (BeCl 2) by reacting this with potassium. SOURCE Atomic weights of the elements: Review 2000 by John R de Laeter et al. It is an Alkaline earth metal with the symbol Be that belongs in Group 2 of the periodic table. It is used in metallurgy as a hardening agent and in many outer space and nuclear applications. 2003 (75) 683-800 Be has 12 known isotopes, but only one of these isotopes (9Be) is stable and a primordial nuclide. Pure Appl. Atomic Number of Beryllium. Atomic mass of Beryllium is 9.0122 u. Beryllium belongs to the Group 2 (IIA) of periodic … Atomic Number – Protons, Electrons and Neutrons in Beryllium. Beryllium atomic number is 4 and the symbol is Be. It is a steel-gray metal that is quite brittle at room temperature. The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.. Beryllium is a silver-grey metal and is hard and brittle at room temperature. Beryllium is a chemical element with atomic number 4 which means there are 4 protons in its nucleus.Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. Atomic structure of Beryllium includes atomic number, atomic weight, electron configuration It has an atomic mass of 9.012 and atomic number of 4. The chemical symbol for Beryllium is Be.. Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. Classified as an alkaline earth metal, Beryllium is a solid at room temperature. Be is a divalent element which occurs naturally only in combination with other elements in minerals. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. Chem. 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