Name: Beryllium Symbol: Be Atomic Number: 4 Atomic Mass: 9.012182 amu Melting Point: 1278.0 °C (1551.15 K, 2332.4 °F) Boiling Point: 2970.0 °C (3243.15 K, 5378.0 °F) Number of Protons/Electrons: 4 Number of Neutrons: 5 Classification: Alkaline Earth Crystal Structure: Hexagonal Density @ 293 K: 1.8477 g/cm 3 Color: gray Atomic Structure Abundance and Isotopes. 5. Draw a Bohr Model of Beryllium Draw a Bohr Model of Chlorine Activity. E- 11 electrons. This atom has _____ protons, _____ neutrons, and _____ electrons. When in an ion state of Be2+ it loses the electrons in a 2s shell and has a configuration of 1s2. e. 2. It is an alkaline earth metal with the atomic number 4. Beryllium is the fourth element listed on the periodic table. Visit [Bohr Model of Helium] Bohr Model, Homeschooling, Homeschool. This does not occur naturally but is made in atomic reactors. Each atom consists of neutrons, protons and electrons. Nevertheless, this isotope, 10 Be, has a half-life of 1.39 million years, which indicates unusual stability for a light isotope with such a large neutron/proton imbalance. 1 decade ago. c. 0 . Answer Save. Therefore, Beryllium will have four protons, four neutrons, and two electrons. Beryllium is also used in nuclear reactors as a reflector and absorber of neutrons, a shield and a moderator. c. Estimate the number of neutrons in a neutral beryllium atom. Beryllium has the atomic number 4 hence has 4 protons and hence 4 electrons. The amount of protons and neutrons remains the same at 4. a. So there are (9-4) neutrons.... or 5 neutrons. Beryllium?s atomic mass is 9 and its atomic number is 4. Abundance earth’s crust: 2.8 parts per million by weight, 4.6 parts per million by moles. N- 12 neutrons.Name Period Date Bohr Model Diagrams. b. It is a steel-gray metal that is quite brittle at room temperature. 1 Draw a Bohr Model of Beryllium Draw a Bohr Model of Chlorine Activity Warm Up. Answer the following additional questions. Rather than drawing individual protons and neutrons, you may simply label how many of each there are in the nucleus (e.g. [Bohr Model of Beryllium] Neon Atom Model, Atom Model Project, Bohr Model. Beryllium, chemical element that is the lightest member of the alkaline-earth metals of Group 2 of the periodic table. These both have 4 protons and 4 electrons but Be-7 has 3 neutrons and Be-10 has 6 neutrons. 5 . Beryllium has an atomic number of 4 and an atomic mass of 9. (Hint: atomic mass) 4. How many neutrons are found in a beryllium atom? How many neutrons are found in a beryllium atom? Calculate the number of protons, neutrons … How many electrons are in the outer level? How many neutrons are in beryllium? Two isotopes of Beryllium are Be-7 and Be-10. 79..118..79. Favorite Answer. This means that Be2+ has 2 electrons. The mass number (of the most stable isotope) is 9. Build the atom to confirm your answers. The other stable isotope is beryllium 10 with a half life of 2,700,000 years and this must have 6 neutrons. Brian L. Lv 7. 5 Answers. a. Beryllium. An uncharged atom of gold has an atomic number of 79 and an atomic mass of 197. d. 9 . Relevance. Based on Build an Atom Webquest.Retrieved from-atom. It is used in metallurgy as a hardening agent and in many outer space and nuclear applications. Beryllium is prevented from having a stable isotope with 4 protons and 6 neutrons by the very large mismatch in neutron–proton ratio for such a light element. Beryllium has an electronic configuration of 1s2 2s2 in its natural state. Use the information provided for each element to draw Bohr Model diagrams. Atomic mass = atomic number + number of neutrons. 13 . ] Bohr Model of Chlorine Activity Warm Up _____ electrons, you may simply label how many neutrons are in! Fourth element listed on the periodic table hence 4 electrons and electrons neutrons … how neutrons... 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