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».
SommarÃ¸y Bridge SommarÃ¸y Bridge (Norwegian: SommarÃ¸ybrua) is a cantilever bridge connecting the islands of KvalÃ¸ya and SommarÃ¸y in the HillesÃ¸y area of the municipality of TromsÃ¸ in Troms county, Norway. The prestressed concrete bridge is 522 metres (1,713 ft) long and the longest span on the bridge is 120 metres (390 ft).