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In the earlier observances in this series commemorating the discovery of new elements, a profusion of information on the chemical properties of the elements 97 (Bit), 98 (Cf), 99 (Es), and 100 (FUI) was available 25 years after their discovery. Many properties obtainable from bulk samples had been measured and we therefore knew of the structure of their metals and simple compounds, their vapor pressures, densities, magnetic susceptibilities, and energy levels In their atoms and molecules. Suchdoi:10.2172/6800251 fatcat:4ena4hmxlvbu7lx7ggjeg25sba