This lecture provides some glimpses into our trek across the actinide series that has now entered into its 20th year. We will detail the synthesis, structure elucidation, physical properties, and electronic structure of the heaviest elements for which this is possible. In particular, this talk will focus on how nonlinear changes in relativistic effects create discontinuities in periodicity that are particularly accute beyond curium (Z = 96). We will describe a number of unusual observations from the chemistry and physics of berkelium and californium.

<b>Award Address</b> (Glenn T. Seaborg Award for Nuclear Chemistry sponsored by the ACS Division of Nuclear Chemistry and Technology). I wonder: A journey into the outer reaches of the periodic table

2019 Spring National Meeting

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Award Address (Glenn T. Seaborg Award for Nuclear Chemistry sponsored by the ACS Division of Nuclear Chemistry and Technology). I wonder: A journey into the outer reaches of the periodic table