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magnesiummore about magnesium


  3  definitions  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Magnesium  \Mag*ne"si*um\,  n.  [NL.  &  F.  See  {Magnesia}.]  (Chem.) 
  A  light  silver-white  metallic  element,  malleable  and  ductile, 
  quite  permanent  in  dry  air  but  tarnishing  in  moist  air.  It 
  burns,  forming  (the  oxide)  magnesia,  with  the  production  of  a 
  blinding  light  (the  so-called  magnesium  light)  which  is  used 
  in  signaling,  in  pyrotechny,  or  in  photography  where  a  strong 
  actinic  illuminant  is  required.  Its  compounds  occur 
  abundantly,  as  in  dolomite,  talc,  meerschaum,  etc  Symbol  Mg 
  Atomic  weight,  24.4.  Specific  gravity,  1.75. 
  {Magnesium  sulphate}.  (Chem.)  Same  as  {Epsom  salts}. 
  From  WordNet  r  1.6  [wn]: 
  n  :  a  light  silver-white  ductile  bivalent  metallic  element;  in 
  pure  form  it  burns  with  brilliant  white  flame;  occurs 
  naturally  only  in  combination  (as  in  magnesite  and 
  dolomite  and  carnallite  and  spinel  and  olivine)  [syn:  {Mg}, 
  {atomic  number  12}] 
  From  Elements  database  20001107  [elements]: 
  Symbol:  Mg 
  Atomic  number:  12 
  Atomic  weight:  24.312 
  Silvery  metallic  element  belonging  to  group  2  of  the  periodic  table 
  (alkaline-earth  metals).  It  is  essential  for  living  organisms,  and  is  used 
  in  a  number  of  light  alloys.  Chemically  very  reactive,  it  forms  a 
  protective  oxide  coating  when  exposed  to  air  and  burns  with  an  intense 
  white  flame.  It  also  reacts  with  sulphur,  nitrogen  and  the  halogens.  First 
  isolated  by  Bussy  in  1828. 

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