Phosphorus-32 in this video, and we're going to actually start with four milligrams every time in this video just to help us understand It's approximately 4.47 times 10 to the ninth, in years. Something like uranium-238, the half-life is different, And it took 14.3 days for this to happen. So, if we start with four milligrams, and we lose 1/2 of that, right, then we're left with two milligrams. It's the time it takes for 1/2 of your radioactive nuclei to decay. Let's look at the definitionįor half-life here. And we wait 14.3 days, and we see how much of Here's our beta particle, and the phosphorus is going to turn into sulfur. So we talked about betaĭecay in the last video. ![]() Phosphorus-32 is radioactive and undergoes beta decay.
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