The elements can be placed in the periodic table. The position of an element provides information about its properties. Most elements are metals, with different. The Periodic Table of the Elements. 1. H. Hydrogen. 2. He. Helium. 3. Li. Lithium. 4. Be. Beryllium. 5. B. Boron. 6. C. List of Periodic Table Elements Sorted by Atomic number. Click a 4, , Beryllium, Be, 1,, 2,, , , 2, [He] 2s 2, 5. BeF 2 has tetrahedrally coordinated metal and forms glasses is difficult to crystallize. An Encyclopedia of Chemicals, Drugs, and Biologicals 14th ed. Retrieved 21 May They are commonly lanthanum and actinium , and less often lutetium and lawrencium. Other beryllium alloys are used as structural materials for high-speed aircraft, missiles, spacecraft and communication satellites. Concise Encyclopedia of Chemistry. Pornographic, defamatory, libellous, scandalous, fraudulent, immoral, infringing or otherwise unlawful use of the Images is, of course, prohibited. The table showed that elements with similar properties often shared the same valency. Coinage metals Platinum-group metals. Specialized groupings such as the refractory metals and the noble metals , which are subsets in this example of the transition metals, are also known  and occasionally denoted. Archived from the original on 13 June To reduce costs, beryllium can be alloyed with significant amounts of aluminium , resulting in the AlBeMet alloy a trade name. Copyright Mark Winter [ The University of Sheffield and WebElements Ltd, UK]. In no event shall the RSC be liable for any damages including, without limitation, indirect or consequential damages, or any damages whatsoever arising from use or loss of use, data or profits, whether in action of contract, negligence or other tortious action, arising out of or in connection with the use of the material available from this Site. Biological role The role of the element in humans, animals and plants. A simple extrapolation from the Aufbau principle would predict the eighth row to fill orbitals in the order 8s, 5g, 6f, 7d, 8p; but after element , the proximity of the electron shells makes placement in a simple table problematic. Beryllium oxide is useful for many applications that require the combined properties of an electrical insulator and an excellent heat conductor, with high strength and hardness, and a very high melting point. Nobel Symposium NS — Chemistry and Physics of Heavy and Superheavy Elements. Quarterly Journal of Science.