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Periodic Table

 
Elemental Facts:
  
Symbol
 Sr
Atomic Number
 38
Atomic Mass
 87.62 
Electron Configuration
2.8.18.8.2
[Kr].5s2
Valence Number 2
Oxidation Numbers +2
Melting Point 1042°K, 769°C, 1416°F
Boiling Point 1657°K, 1384°C, 2523°F 
Family
 2
Series
 5
Element Classification
 Alkali Earth Metal
Density
 2.54g/cc @ 300K
Crystal Structure Cubic face centered
State of Matter
 Solid
Date/Place of Discovery
 1970, Scotland/Ireland
Person Who Discovered Adair Crawford
Historical Facts and Elements Uses:
Strontium  «STRON shee uhm», a chemical element, is a soft, silvery metal.  It exists as a number of isotopes (atoms with the same atomic number but different atomic weights).  Strontium 90 is a dangerous radioactive isotope found in the fallout from some nuclear explosions.  The isotope's radioactivity destroys the tissues that produce blood in people and animals. 
Strontium is found in the minerals celestite and strontianite.  It combines readily with oxygen, nitrogen, and hydrogen. Strontium nitrate burns with a crimson flame, and is used in flares and fireworks.  Strontium has the chemical symbol Sr.  Its atomic number is 38, and its atomic weight is 87.62.  It melts at 769 °C and boils at 1384 °C.  It was discovered in 1790 by Adair Crawford of Ireland. 

 
Bibliography:
http://www.environmentalchemistry.com/yogi/periodic/Sr.html, 18-01-02

http://www.webelements.com/webelements/scholar/elements/strontium/key.html, 18-01-02

http://nobel.scas.bcit.ca/resource/ptable/sr.htm, 18-01-02

http://www.worldbookonline.com/wbol/wbPage/na/ar/co/536500?op1=&st1=Strontium&op2=&st2=&op3=&st3=, 18-01-02

http://periodictable.com/pages/AAE__studentHOME.html, 18-01-02

 
Periodic Table Links

 
Created By:
 MAL
Last Updated:
 18-01-02
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