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Astatine has many isotopes, each with its own half life. The longest in my list is At209 at 8.1 hours, and At215 is listed at 0.1 ms. The shortest are just listed as 'short' reflecting the small quantities.
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Element with shortest half life?
213At (Astatine) which has a half life of 125 nanoseconds or 0.000000125 seconds.
What element has a half-life of only 8 seconds?
The answer is Radium
If Astatine-218 has a half-life of 1.6 s Suppose you have a 1.2-g sample of astatine-218 How much of the sample remains unchanged after 6.4 seconds Explain how you solved the problem?
After 1.6 seconds, 0.6 g astatine-218 remains unchanged. This amount is reduced by half to 0.3 g at 3.2 seconds. It is halved again at 4.8 seconds to 0.15 g, and halved once more to 0.075 g unchanged after a total of 6.4 seconds.
The time it takes for half of the radioactive element to decay is the element's what?
The time it takes for half the atoms in a sample of a radioactive element to decay is called the half life.
What is the term given to the time it take for one half of a sample of radioactive nuclei to decay?
I believe that term would be 'half-life'
Is astatine bad?
As a radioactive element with a short half life astatine is dangerous.
Element with shortest half life?
213At (Astatine) which has a half life of 125 nanoseconds or 0.000000125 seconds.
What is the Atomic mass of astatine?
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.
Describe about the stability of astatine?
All the isotopes of astatine are radioactive and unstable; the most stable isotope is 210At with a half life of 8,1 hours.
What element has a half-life of only 8 seconds?
The answer is Radium
Where does Astatine go after its half-life?
It doesn't "go" anywhere. It radioactively decays and changes into a different element.
Why is astatine is the rarest element on the earth?
Astatine is the rarest naturally occuring element on Earth because all its isotopes are radioactive with very short half-lives. The most stable, At-210 has a half-life of 8 hours, so any astatine that forms (by radioactive decay of heavier elements) quickly decays to other elements.
Is astatine odorless?
All the isotopes of astatine are radioactive and has very short half lives; consequently is a dangerous element.
Why is Astatine not a diatomic element?
It is diatomic. Being radioactive, and its most stable isotope having a half life of 8.3 hours, it is usually not considered.
Why astatine have different oxidation number?
Different from what? Very little is known about the chemistry of astatine - it is radioactive and the most stable isotope has a half life of 7-8 hrs! As far as is known and that isn't far- astatine is most like iodine with ONs presumably of -1, 1, 3, 5, 7
Why the boiling point and the appearance of astatine are unknown?
The estimated boiling point is 338 0C; the color may be black. It is impossible for chemists to make a deep study of astatine because they have only very small quantities of this element; also astatine is radioactive, unstable, with a half-life of only 8,1 hours.
Why is it that astatine is a halogen but not a diatomic element?
The seven common diatomic molecules are hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine. It is not yet determined whether or not Astatine is diatomic due to its radioactive half life. In its most stable form it only has a half life of approximately 8 hours.
