Gallium - GA

A detailed Summary of Gallium - GA

Gallium was an element whose existence was predicted by Mendeleev in 1871. He predicted that the then unknown element gallium should resemble aluminum in its properties. He suggested that the name ekaaluminium. He predicted that the element would have an atomic mass of 68, its formula would be Ea2O3, the gravity would be 5.9, and that it would be discovered spectroscopically. All these properties were very accurate to Gallium's, which I will explain later on. In the 1800s, French Chemist, Paul-Emile Lecoq de Boisbaurdan (1838-19120 set out to find the metals that were missing in Mendeleeves table, in between aluminum and indium, and found Gallium in 1875. He suspected that he was on the right track when he discovered new spectral lines from samples of the zinc mineral, sphalerite. Sphalerite a zinc sulfide mineral which was once called galena inanis, useless lead. This included many metallic impurities, including gallium. Months later he isolated the pure element by electrolyzing a mixture of hydroxide and potassium hydroxide.

Gallium is a soft metal. It is the only metal, except for mercury, caesium, and rubidium, which ca

67Ga 66.928205 3.260 d EC to 67Zn 3/2 1.8507

75Ga 74.92650 2.10 m b- to 75Ge 3/2

73Ga 72.92517 74.87 h b- to 73Ge 3/2

Some common words found in the essay are:
Al Indium, Paul-Emile Lecoq, Half-life Mode, , gallium arsenide, ppb atoms, 10 ppb, gallium soft, electricity directly, atomic mass, ppb weight, liquid near, indium thallium,

Approximate Word count = 767
Approximate Pages = 3 (250 words per page double spaced)

Category: Science

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