Science
Heavy atom spills its guts in decade-long experiment – Live Science
Astatine gobbles and spits out electrons. Two numbers tell us how.
Wielding proton beams and lasers, physicists have for the first time unlocked one of the key secrets of the rarest naturally occurring element on Earth: astatine.
Astatine is a “halogen,” meaning it shares chemical properties with fluorine, chlorine, bromine and iodine (all elements that typically bind with metals to form salts). But with 85 protons, it’s heavier than lead and is extraordinarily rare on Earth the rarest of the elements that occur naturally in Earth’s crust, according to chemist…
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