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how many protons does hassium have?
Hassium has 108 protons in its nucleus, which is the number of particles that make up an atom. The nucleus is surrounded by electrons, which give it its chemical characteristics.
Like all elements, hassium is a silvery metal that can be found only in small quantities. It is also very expensive to produce. Because of these factors, hassium is rarely used outside basic scientific research.
Despite this, scientists have made some progress in understanding its properties. They expect it to behave like the heavier members of its group, such as osmium. They believe it will react with oxygen in air to form a volatile tetroxide, and they predict that it will have a high melting point and crystallize in the hexagonal close-packed structure.
Hassium is also expected to be radioactive. The lightest isotopes have half-lives that last from milliseconds to seconds, and the four heaviest isotopes will probably decay into higher-energy helium particles. Because only a few atoms of hassium have ever been produced, it is difficult to study.
A team led by Peter Armbruster and Gottfried Munzenberg created it in 1984 at Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany, by bombarding a lead isotope 208Pb with ions of iron isotope 58Fe using a linear accelerator. They named it hassium after the German state of Hesse, which is pronounced hess-ias. The IUPAC later approved the name in 1997.