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GA in Paris by the Bois Lang found in 1875 to win. He in sphalerite ore (ZnS).

Metal gallium

A new purple line was observed on the atomic spectra taken from the zinc. He knew it would mean an unknown element.

It was not aware of the existence and properties of Lang Lang, Mendeleev has been successfully predicted by the success of his element cycle table shows that there is a gap in the aluminum has not been occupied. He predicted the unknown element atomic weight is about 68, its density is 5.9g/cm fand.

In November 1875, the extraction and purification of the Lang Bois won the new metal, and proved it like aluminum. In December 1875, he announced to the French Academy of Sciences

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