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| 1. |
Sea is the greatest source of halogens. Comment. |
| Answer» Solution :Sea water CONTAINS chlorides, bromides and iodides of SODIUM, potassium, magnesium and calcium, but mainly sodium CHLORIDE (2.5% by mass). Dried up sea beds CONTAIN sodium chloride and carnallite, `KCl.MgCl_(2).6H_(2)O`. Certain seaweeds contain upto 0.5% of iodine as sodium iodide and CHILE saltpetre `(NaNO_(3))` contains upto 0.2% of sodium iodate. Thus, sea is the greatest source of halogens. | |