The most expensive element on Earth: $1 billion per gram!
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Francium: The Discovery of World's Most Expensive Element
"World’s Most Expensive Element".# 1 Billion$ per Gram!
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What is the World's Most Expensive Element? #shorts
FRANCIUM 😱 World's Most Expensive Element! #facts #askiitians
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The world's most expensive element
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The most EXPENSIVE ELEMENT in the World #shorts
