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- Astatine - Wikipedia
It is the rarest naturally occurring element in the Earth's crust, occurring only as the decay product of various heavier elements All of astatine's isotopes are short-lived; the most stable is astatine-210, with a half-life of 8 1 hours
- Astatine Facts - The Rarest Natural Element
Astatine (At) is a rare and highly radioactive element with atomic number 85 It is part of the halogen group (Group 17) in the periodic table, which also includes fluorine, chlorine, bromine, and iodine Unlike the other halogens, astatine has no stable isotopes
- Astatine | Radioactive Halogen, Uses in Medicine Research . . .
astatine (At), radioactive chemical element and the heaviest member of the halogen elements, or Group 17 (VIIa) of the periodic table
- Astatine - Element information, properties and uses . . .
A mass spectrometer has been used to confirm that astatine behaves chemically like other halogens, particularly iodine Astatine has no known biological role It is toxic due to its radioactivity Astatine can be obtained in a variety of ways, but not in weighable amounts
- Astatine Element | Uses, Facts, Physical Chemical . . .
Astatine is a shiny dark colored element Astatine is a radioactive element It is a semiconductor and can have metallic properties Astatine undergoes sublimation but less readily than iodine and have a low vapor pressure
- Astatine (At) Element: Properties, Hazard, Uses - Science Info
Astatine is a chemical element with an atomic number of 85 and is represented by the symbol ‘At’ in the periodic table Its appearance is unknown classified as metal and belongs to the p-block of group 17 of the periodic table
- Astatine - New World Encyclopedia
Astatine (chemical symbol At, atomic number 85) is the rarest naturally occurring chemical element It is a member of the halogen family of elements and is the heaviest halogen Its chemical properties appear to resemble those of iodine
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