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.
That refers to the time it takes for half of the substance to decay, and convert to something else. By the way, the half-life is NOT defined for elements, but rather for nuclides, also known as isotopes. The same element can have different isotopes, with different half-lives, or some of the isotopes may be radioactive, others not.
The half-life of a radioactive element refers to the amount of time it will take for any given quantity of the element to become half as radioactive (emit half as much radioactivity) as it was (did).
Half-life :
Half-life of a radioactive element is the time taken by any element to become half of initial .
Eg : If you take 4 grams of radium,
time to become 2 grams of radium is half-life
Suppose time to become 2 grams is 2 hours
Then time to become 1 gram is also same and i.e., 2 hours
Time to become 0.5 gram is also same i.e., 2 hours.
So, Half-life of radium is 2 hours.
Note : Radioactive elements disintegrate continuously ..............
& Above described is just an example and not true
The radioactive half-life of an element is the length of time it takes for one half of the element to decay to something else. It is a logarithmic progression, meaning that at the end of successive half-lives, there will be 0.5, 0.25, 0.125, 0.0625, etc of the original sample left. The equation is...
AT = A0 2(-T/H)
...where A0 is the starting activity (amount of sample), T is some period of time, H is the half-life in units of T, and AT is the ending activity after time T.
There are too many elements, and too many isotopes of elements, to answer that question in this space. For more information, take a look at the NNDC database which is quoted in the Related Links below.
Half-life is the period of time it takes for a substance (element) undergoing decay to decrease by half. but its never half of time that takes whole substance to decay
A half-life for a radioactive element or isotope is the amount of time it takes for exactly half of a sample of that element or isotope to decay.
Depends on the element in question.
The time it takes for half the atoms in a sample of a radioactive element to decay is called the half life.
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.
No, the half life remains exactly the same throughout
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.
Time it takes for half of the atoms in a shape to decay!
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.
The half-life
The time it takes for half the atoms in a sample of a radioactive element to decay is called the half life.
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.
Uranium has the longest half-life element
The half-life
The half-life
The half-life is the time that it takes for 1/2 of a material to decay.
It varies from one element to another. It is measured in terms of its half-life. A half-life is the length of time it takes for half the number of radioactive atoms of the element in a lump to decay.
Uranium
Uranium
half life