Which is the most rearest elemental metal on earth?
Answer:
Astatine (At) is much rarer than uranium (U). Astatine is radioactive and essentially unavailable in nature. The longest-lived isotope, 210At, has a half-life of only 8.3 hours. It forms when bismuth (Bi) isotope 209Bi is bombarded with α-particles.
Astatin is the answer...
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