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Gallium
Start of Term Paper
1871 Dmitrii Ivanovich Mendelev predicts the existance and properties of the
element after zinc in the periodic table. He Gives it the name "eka aluminium".
1875 Paul Emile Lecoq de Boisbaudran discovers . Its properties closely
match those pre .... Middle of Term Paper
... eka-aluminium, the then undiscovered element lying between aluminum
and indium in his periodic table.
Though widely distributed at the Earth's surface, gallium does not occor
free or concentrated in independant minerals, except for gallite. It is
extracted as a by-product from zinc blende, iron pyrites, bauxite, and
germanite.
Silvery white and soft enough to be cut with a knife, gallium takes on a
bluish tinge because of superficial oxidation. Unusual for its low melting
point ( about 30 degrees C, 86 degrees F ), gallium also expands upon
solidification and supercools readily, remaining a liquid at temperatures as
low as 0 degrees C ... |
| Number of Words: 487 |
Approximate Pages: 2 |
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