Periodic Table
-
standard table
-
large table
Chemical Elements
-
by name
-
by symbol
-
by atomic number
Chemical Properties
Chemical Reactions
Organic Chemistry
Branches of Chemistry
Analytical chemistry
Biochemistry
Computational Chemistry
Electrochemistry
Environmental chemistry
Geochemistry
Inorganic chemistry
Materials science
Medicinal chemistry
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Organic chemistry
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Physical chemistry
Polymer chemistry
Supramolecular Chemistry
Thermochemistry
845
Years:
841
842
843
844
-
845
-
846
847
848
849
Decades
:
810s
820s
830s
-
840s
-
850s
860s
870s
Centuries
:
8th century
-
9th century
-
10th century
Events
March 28
-
Paris
is sacked by
Viking
raiders, probably under
Ragnar Lodbrok
, who collect a huge ransom in exchange for leaving.
Vikings
also sack
Hamburg
and
Melun
.
Births
Deaths
Michael I Rhangabes
, Byzantine Emperor
al-Khwarizmi
, mathematician (approximate date)
01-04-2007 01:16:19
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