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i guess it's Tellurium 128, with a half life of 2.2e24; you may consider it a stable isotope as well.

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11y ago
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12y ago

Hydrogen. It's half life is infinity!

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9y ago

Uranium

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Q: Which element has Highest half life period?
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Related questions

Is a period of an element the amount of time it takes for half of a radioactive isotope to decay?

False- the period is the horizontal row the element is in


What does Half-Life of Uranium 235 mean?

Uranium is a radioactive element and conteneously disintegrate into smaller element, that time in which 1g of uranium becomes half g is known as half life period of uranium.


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.


If the half life of an element is 5 days and 100 milligrams of the element is initially available how many milligrams (mg) of the element is available after 20 days?

The answer is 2. If after one half-life only half of the element remains, then after another half-life half of what was there only remains. So a half of a half is a quarter (or a fourth). So that's 2 half-lives.


How long does it take for 60 of a gas radon to decay when it has a half life of 3.82 days?

Half-life time of a radioactive element is the time required for the decomposition of half of the actual mass of the element."Half life of radon is 3.8 days."This means that a particular mass of radon is reduced to half its mass in 3.8 days. The half-life period of an element does not depend upon the original mass of the element. This means that 10gms of radon will become 5gms of radon is 3.8 days, and 80gms of radon will become 40gms in 3.8 days.


What is the half life of the radioactive isotope?

The half life is the period of time it takes radioactive decay to transmute one half of the isotope present at the start of the period to a different isotope, usually an isotope of a different element. This period of time is different for different isotopes, with known isotope half lives ranging from femtoseconds to many billions of years.


How long will it take half of a radioactive sample to decay?

The length of time depends on the element and isotope, but the point at which half of the sample has decayed is known as the half-life.


How can half lives be shortened?

Half life of an element can't be changed.. It is a characteristic of a radioactive element which is independent of chemical and physical conditions.. Half life is that time in which half of radioactive sample( i.e., a radioactive element) decomposes. So no matter what amount you take half life of an element remains same.


Is the half-life of a chemical element one-half of the amount of a radioactive element to decay?

The half-life is the time that it takes for 1/2 of a material to decay.


As a sample of a radioactive element decays its half-life?

No, the half life remains exactly the same throughout


What is radioactive half life of an element?

The half-life of a radioactive element is the time required for one-half of the nuclei of a radioisotope sample to decay to products.Half-life (t½) is the time required for a quantity to fall to half its value as measured at the beginning of the time period.


What is the half-life of this element?

Without knowing the element and the specific isotope, this has no answer.