Price Comparison (Most Expensive Substance)
The most expensive element on Earth: $1 billion per gram!
Plutonium, the Most Dangerous Man Made Element
Price Comparsion: Most Expensive Element; How many elements can you buy?
Francium: The Discovery of World's Most Expensive Element
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Most expensive element: francium
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Most expensive element on earth |
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Most expensive natural element
The most EXPENSIVE ELEMENT in the World #shorts
Most expensive element. Francium #element
World’s Most Expensive Element !
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