Germanium
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Germanium is a chemical element; it has the symbol Ge and atomic number 32. It is lustrous, hard-brittle, grayish-white and similar in appearance to silicon. It is a metalloid in the carbon group that
Polycrystalline germanium
Renierite
A PET bottle
Gallium
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Gallium is a chemical element; it has symbol Ga and atomic number 31. Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in Paris, France, 1875, elemental gallium is a soft, silvery meta
Germanium
…of 19.7+0.6 −0.5 eV. At pressures above 120 kbar, germanium becomes the metallic allotrope β-germanium with the same structure as β-tin. Like silicon, gallium, bismuth, antimony, and water, germanium is one of the few substances that expands as it solidifies (i.e. freezes) from the molten state. Germanium is…
Crystalline (orthorhomobic) gallium
Crystallization of gallium from the liquid
99.9999% (6N) gallium sealed in vacuum ampoule
Bauxite mine in Jamaica (1984)