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The Atomic Mass of astatine is 209.9871 atomic mass units (amu). The atomic mass is given for the longest lived isotope of astatine, which is astatine-210, with a half life of 8.3 hours.

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Q: What is the Atomic mass of astatine?
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Related questions

How many neutrons and does astatine have?

Each isotope has a different number of neutrons. Number of neutrons = Atomic mass of the astatine isotope - 85


What is the atomic weight of astatine?

Astatine (At) has an atomic weight of 209.9871 g/mol


Astatine has 85 protons what is the atomic number?

The atomic number is the number of protons, so the atomic number of astatine is 85.


If astatine undergoes beta decay what element will result?

Atomic number becomes two units less and atomic mass four units less. Bismuth is the answer.


What has the lowest atomic number of any metal?

Bromine, because Bromine has an atomic mass of only 5.


What's another word for astatine atomic number 85?

No other name for astatine.


What is the atomic radius of astatine?

1.43 Ã…


What is the atomic number of astatine?

The atomic number of astatine (At) is 85.The atomic weight of At is 210 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!


What is the atomic number of astaine?

Astatine, chemical symbol At, has an atomic number of 85.


What kind of radiation is emitted when polonium decays to astatine?

Polonium, which has an atomic number of 84, decays to astatine, which has an atomic number of 85, a negative beta particle is emitted.


What family does astatine belong to?

Astatine is an element in the periodic table, belonging to group 7.It has an atomic number of 85.


What is the viscosity of Astatine?

According to Webelements, the estimated density of astatine is 6400 kg/m3.