It will take two half-lives or about 60.34 years for three-fourths of a Cs-137 sample to decay.
132g
10.76 days
How long it takes for half of a sample to decay to another form.
The half-life of a radioisotope is the time it takes for half of the radioactive nuclei in a sample to decay. It is a characteristic property of each radioisotope and determines the rate at which the isotopes decay.
Half-life of 2000 years means that after 2000 years, half of the sample will decay - so of course the other half of the sample is still around.Half-life of 2000 years means that after 2000 years, half of the sample will decay - so of course the other half of the sample is still around.Half-life of 2000 years means that after 2000 years, half of the sample will decay - so of course the other half of the sample is still around.Half-life of 2000 years means that after 2000 years, half of the sample will decay - so of course the other half of the sample is still around.
You forgot to say that isotope is.
To figure out how old something is based how long it takes elements in the sample to decay.
It will take 25.0898 minutes, approx.
One Half-Life :-)
700 million years
Thorium-219 has a half-life of about 1.4 minutes. To calculate the time it takes for a 2kg sample to decay to 15.6g, you would need to use the radioactive decay formula. This would involve determining the number of half-lives it takes for the 2kg sample to decay to 15.6g.
How long it takes for half of a sample to decay to another form.