Thallium The MOST TOXIC METAL ON EARTH

The most toxic metal on earth it's the thallium. In the periodic table of chemical elements thallium lies on the bottom of group 13 having an atomic number 81. Thallium was first discovered in 1861 by an English scientist William Crookes and also simultaneously by a French chemist Claude-Auguste Lamy. It was discovered thanks to the green colour of flames, that compounds of this metal would give. Thallium was discovered when scientists studied rocks containing lead. Nowadays, it is mostly extracted from sulfidic heavy metals, such as crookesite and “gicionite”

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