A team of scientists from the University of Oxford, UK has finally confirmed why a grey cloud appears when mercury and water are mixed. The reason behind the grey cloud formation and what it consists of has puzzled scientists for years. However, Scientists characterizing the grey cloud formed in the reaction detected unique core-shell particles with liquid centers and solid shells. Scientists explained that Hg(OH)2 molecules appear when elemental mercury and OH radicals react in intense sound fields. The study could help understanding environmental aspects of mercury behavior as most mercury (II) compounds are insoluble in water.
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