# Find the half-life of an element which decays by 3.419% each day.?

The Half life is ___________ Days

could someone explain the process?

### 1 Answer

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- Vincent GLv 74 weeks ago
Each day, the remaining isotope is 96.581% of what it was the day before.

So what happens is that you will get, after "n" days, 0.96581^n.

The equation to solve is therefore 0.5 = 0.96581^n where the number of days is "n".

That is easily done with the logarithms.

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