Part 1 of Essay
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 predicted by Mendelev. Gallium, atomic number 31, is very similar to aluminum in ....

Part 2 of Essay
.... 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 ( 32 ....