Iodine, The 53rd element

Sunday, February 26, 2006


Properties:

Iodine is a lustrous crumbly dark-purple solid that is solid at room temperature. Its melting point is 236.66 degrees Fahrenheit and its boiling point is 363.7 degrees Fahrenheit. Iodine has a density of 4.933 g/cm^3 and its atomic mass is126.904 g/mol. Iodine belongs to the chemical series of Halogens. On the periodic table, it is placed between Tellurium and Xenon on the far left side. The iodine molecule has five electron shells. Each shell has a certain number of electrons, starting with the center, 2, 8, 18, 18, and 7. The iodine molecule has 53 protons and 73 neutrons. Iodine dissolves easily in chloroform to form a purple solution. Iodine is the least reactive but the most electropositive of the halogens and is nonmagnetic.Iodine's molecular formula is RMM=127. When iodine is mixed with water, it results in a pale yellow color.

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