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radon, the radioactive gas that contributes more than half the yearly dose to the average american, has a half-life of approximately 4 days. how many days does it take a radon source to decay to 1/8 of its original level of radioactivity?

Respuesta :

It takes 12 days for Radon to decay to 1/8 of its original value of radioactivity.

The half life of the radioactive gas Radon is 4 days,

The half life of the substance is that amount of time in which the concentration of the substance decreases to half of its initial value.

It means that in 4 days, Radon will decrease to half of its original level of productivity.

So, if the initial radioactivity is A,

Then after 4 days the radioactivity will be A/2.

Now, after 4 more days, the radioactivity will become A/4.

Again, after 4 more days, the radioactivity will become A/8.

So, the total time taken to reach the reactivity 1/8 of the initial value is 12 days.

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