Page 129 - The Periodic Table Book
P. 129

102

             No      Nobelium

                                                                                                   State: Solid
                                                                                   102   102   157 Discovery: 1963

                                                                                      This artificial metal
                                                                                      is named after the             Actinides
                                                                                      Swedish chemist Alfred
                                                                                      Nobel, who started the
                                                                                      Nobel Prize. It was
                                                                                      discovered in 1963 by a
                                                                                      team of scientists working
                                                                                      in California, USA. This
                                                                                      team included Albert
                                                                                      Ghiorso, Torbjørn
                                                                                      Sikkeland, and John
                                                                                      R Walton. They used
                                                                                      a particle accelerator
                                                                                      to fire carbon atoms at
                                                                                      curium atoms, creating
                                                                                      nobelium atoms, which
                                                                                      broke apart within minutes.

                      Albert Ghiorso, Torbjørn Sikkeland, and John R Walton



             103
             Lr      Lawrencium




                                                                                                103   103    163


                                                                       Lawrencium
                                                                     was produced at
                                                                     the Berkeley
                                                                      lab set up by           State: Solid
                                                                                              Discovery: 1965
                                                                     Ernest Lawrence.







                                                                Lawrencium is named after the US scientist
                                                                Ernest Lawrence, who developed the first
                                                                cyclotron particle accelerator. This is a
                                                                machine in which parts of atoms are smashed
                                                                together by making them spin round in circles.
                                                                Lawrencium atoms were produced in a
                                                                similar machine by firing boron atoms at
                            An early cyclotron                  californium atoms.                                   127





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