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».
The Confederation Bridge, Canada â Longest Bridges in the World. At 12.9 km in length, the Confederation Bridge is the worldâs longest bridge over ice covered waters. It is a multi span post tensioned concrete box girder structure which carries the two lane Trans Canada Highway between Prince Edward Island and New Brunswick. The Confederation Bridge , Canada â Top View.