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Mercury
Beginning of essay
’s symbol is Hg, its atomic number is 80, its atomic mass is 200.59, its in group 12 and in period 6, and it also has two valence electrons. Its standard state is liquid at 298ºK and it is the heaviest known elemental liquid. It has a silvery white color. It is named after the planet "" the ....
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.... dangerous levels are readily attained in air. Air saturated with vapor at 20°C contains a concentration that exceeds the toxic limit many times. The danger increases at higher temperatures. It is therefore important that be handled with care. Containers of should be securely covered and spillage should be avoided. should only be handled under a well-ventilated area. is well known because of its use in many thermometers. It was common to demonstrate the formation of in the laboratory .... |
| Number of words: 391 |
Approximate pages: 2 |
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