II. 1610

kJ / mol III. 2466 kJ / mol IV. 4370 kJ / mol V. 5400 kJ / mol VI. 8520 kJ / mol Bismuth (Bi, Lat. Bismutum) - the chemical element, metal block p of the periodic table. The n ame comes from the German word Wismut. Occurs in the earths crust in an amount of 0.048 ppm (2 times more than gold) in the form of three ore: bizmutynu (Bi2S3) bizmutytu ((BIO) 2CO3), and ocher bismuth, which are usually pollution lead and copper ores. Rarely occurs in the form of native (elemental). Bismuth has 35 isotopes with mass range 190-215.