Vapor pressure 9.9 x 10-18 mm Hg. 23. 24 KI crystallizes in the sodium chloride structure, hexahedral crystals. It is less hygroscopic than sodium. 25 iodide, making it easier to work with. Potassium iodide is stable in dry air but slightly hygroscopic in. 26 moist air.
Earlier this year China opened the Quindao Haiwan Bridge, the world's longest bridge over water stretching 26.4 miles. With the opening of the Quindao Haiwan, Louisiana's Lake Pontchartrain Bridge fell to second longest after holding the top spot since it opened in 1956. Click here to see the bridges > Â».
China Opens the World's Longest Bridge Over Water, Toppling American Record-Holder. Along with its massive high-speed rail network, China has officially surpassed the United States in yet another piece of transportation infrastructure: the world's longest sea bridge. The new bridge spans Jiaozhou Bay, on the southern coast of China's Shandong Peninsula in northeastern China.