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Earth's Rarest Element: Francium!😱
Think gold's expensive? Meet francium. 🧪💸 Atomic number 87 with a half-life of about 22 minutes, it's so unstable and rare (an estimated 20–30 grams exist in Earth's crust at any time) that a single gram is valued at nearly $1 billion. What would you do if you found a speck of it? Comment below! 👇 #truefacts #Francium #Chemistry # ...
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