begin mathsize 36px style lambda equals fraction numerator 2.303 over denominator t end fraction log open parentheses n subscript 0 over n close parentheses end style

λ = Radioactive Decay Constant or Disintegration Constant; t = Time interval for which radioelement is present ;  

n0 = Initial number of atoms ; n= Final number of atoms.

λ

t

n0

n

 

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