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Word Count: 512
There are 109 known elements and of those 19 of them are artificially produced or synthetic A synthetic element is made by bombarding atomic nuclei with neutrons or other particles The element Lawrencium has been made in this manner While scientists continue to work to create more elements it should be noted that most synthetic elements are so unstable that they are of theoretical value only and have no known practical uses This element was discovered at the Lawrence Radiation Laboratory at The University of California in 1961 by Albert Ghiorso Torbjorn Strikkland Almon E Larsh and Robert M Latimer The Element Lawrencium was named after the American physicist Earnest Lawrence inventor of the cyclotron particle accelerator in which sub-atomic particles are sent round and round in a circle at ever increasing speeds until they have enough energy to smash into an atom thereby creating a new atom It is also a member of the actinide series a series of chemically similar radioactive elements with atomic numbers ranging form 89 actinium through 103 lawrencium Lawrencium is a manmade element of which only a few atoms have ever been created Lawrencium is made by bombarding particles of californium with particles of boron in a cyclotron or other accelerator The process is complicated and expensive Bombarding curium another artificial element in the actinide series with helium makes californium Californium is then converted into lawrencium Lawrencium is not only hard to make it is very unstable With a half life of three minutes the most stable isotope Lr 260 is hard to identify and impossible to preserve Unlike natural elements lawrencium has remained a mystery The normal physical and chemical properties of more stable elements have been observed recorded and described Color hardness density and other characteristics
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