* Emsley, John (2001). "Plutonium". Nature's Building Blocks: An A-Z Guide to the Elements. Oxford (UK): Oxford University Press. pp. 324–329. ISBN 0198503407. * Greenwood, N. N.; Earnshaw, A. (1997). Chemistry of the Elements (2nd ed.). Oxford (UK): Butterworth-Heinemann. I...
In November 1943 some plutonium trifluoride was reduced to create the first sample of plutonium metal: a few micrograms of metallic beads.[50] Enough plutonium was produced to make it the first synthetically made element to be visible with the unaided eye.[78] The nuclear properties of plutonium...