Abstract
Germanium and silicon* co-occur in group IV-A of the Periodic Table. The two elements have similar outer shells and their ionic radii are also very similar (Ge = 0.47 Å; Si = 0.42 õ). Ge therefore resembles Si in its chemical properties (Jolly, 1966), and is known to substitute for Si in a number of silicate minerals (Goldschmidt, 1958). Both Si and Ge have been reported in all plants and animals examined.
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Azam, F., Volcani, B.E. (1981). Germanium-Silicon Interactions in Biological Systems. In: Simpson, T.L., Volcani, B.E. (eds) Silicon and Siliceous Structures in Biological Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-5944-2_3
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DOI: https://doi.org/10.1007/978-1-4612-5944-2_3
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