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Thorium

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by

Hannah Whitesell

on 21 November 2013

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Transcript of Thorium

Thorium
Significance of Name
Thorium is named for Thor, the Scandinavian god of war
Thorium (Th)
Atomic Number: 90
Atomic Weight: 232.0381 amu
Location on Periodic Table: period 7, second element of the actinide series.

Properties
Density: 11.72 grams/cubic cm
Melting point: 17.50.0 C
Boiling point: 4790.0 C
Ionization Energy: 587 KJ/mole
Electronegativity: 1.3
Electron configuration: [Rn]6d(2)7s(2)6d(2)7s(2)
Atomic Radius: 179pm
Ionic Charge Oxidation State: 0-4
Common Isotopes: Th230, Th 232
Physical State and Appearance
Metal
Silvery (often with black tarnish)
Current Cost
As high as $5,000/kg but will drop to $10 because demand is so low
Discovery
Date: 1828
Discovered by: Jons Berzelius
Practical Uses
Portable Gas lights
Strong Alloys
Ultraviolet Photoelectric Cells
Nuclear Power
Interesting Facts

One ton of thorium can produce as much energy as 200 tons of uranium.

One pound of thorium equals the energy potential of about 3 million pounds of coal
Poem
Oh the great element thorium
In gaslight mantles at emporiums
Its just two less than uranium
And shiny like chromium
Burns as bright as magnesium
Even used in crucibles oh thorium
It doesn't taste like sodium
Or give you strong bones like calcium
A catalyst for cracking petroleum
Don't drop it in your aquarium
You'll just cause pandemonium
Like they were on opium
Keep that sadness at a minimum
Bring that smile to a maximum
And jump for joy in a gymnasium
For the greatest element THORIUM!

Sources
http://www.rsc.org/periodic-table/element/90/thorium
http://answers.yahoo.com/question/index?qid=20071030153440AA12Yoa
http://en.wikipedia.org/wiki/Thorium
http://www.chemicalelements.com/elements/th.html
Full transcript