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Strontium



Name Strontium
Atomic Number 38
Atomic Weight 87.62
Symbol Sr
Melting Point ( °C ) 1377 °C
Boiling Point ( °C ) 777 °C
Density (g/cm3) 2.64 g·cm−3
Earth crust (%) 0.036%
Discovery (Year) 1787
Group 2
Electron configuration Kr 5s2
Ionization energy (eV) 5,6949
Strontium is a highly reactive, soft silver-white alkaline earth metal.

Element Symbol-Sr,
Atomic Mass-87.62,
Strontium has 4 main Isotopes.(84, 86, 87, 88, of Sr).
1-Isotope
2-Atomic mass (ma/u)
3-Natural abundance (atom %)
1-84Sr
2-83.913430 (4)
3-0.56 (1)
1-86Sr
2-85.9092672 (28)
3-9.86 (1)
1-87Sr
2-86.9088841 (28)
3-7.00 (1)
1-88Sr
2-87.9056188 (28)
3-82.58 (1)
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This elements major industrial use is for glass for a color television on the cathode ray tube. It prevents x-rays from coming out of your tv.
It could also be used in toothpaste if its combined with chloride.
99% of strontium in the body is in the bones. Strontium could be taken as a supplement through the mouth to cure osteoporosis. Strontium Chloride is used as a medicine to stop pain and build strong bones. It is found and toothpaste to cure sensitive teeth.
 The cost of 1kg of strontium is 1000$.
The abundance of this element on earth is 0.036%.
The abundance of Strontium in the universe is 4.x10-6%.
Strontium is found in the solid phase when its at its normal state in nature.
Strontium is a alkaline earth metal.
Strontium Boiling point:1050 K ​(777 °C, ​1431 °F).
Melting point:1650 K ​(1377 °C, ​2511 °F).
Density-2.64 g·cm−3(at 0 °C, 101.325 kPa). Strontium is a good conductor. Strontium can be radioactive and has a beta decay. When it decays it  has a half life of 28.79 years.

Discovery

It was discovered in 1787 by William Cruickshank but it was synthesized and isolized in 1808 by Humphry Davy.
It was discovered in a scottish village of Strontian in a mine.

References

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http://www.webelements.com/strontium/isotopes.html



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