Assertion: protactinium's number | /r/HasProperty | n =n 0 e −λt
Facets:
Source sentences:
text: The number of nuclei N as a function of time is N =N 0 e −λt , where N 0 is the number present at t = 0, and λ is the decay constant, related to the half-life by [latex]\lambda=\frac{0.693}{t_{1/2}}\\[/latex].