PredictionDiscovered Ekaaluminium (1871): atomic mass = 68 density = 6.0 Gallium (1875): atomic mass...

download PredictionDiscovered Ekaaluminium (1871): atomic mass = 68 density = 6.0 Gallium (1875): atomic mass = 69.72 density = 5.904 Ekasilicon (1871):

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