Explain what is the half life of the isotope

Reference no: EM13237208

The number of nuclei decaying in a sample of Gallium-68 decreased by a factor of 4 over a period of 136.6 minutes. What is the half life of this isotope?

a. 47.2203 minutes

b. 114.05 minutes

c. 75.773 minutes

d. 68.3 minutes

e. 101.333 minutes

Reference no: EM13237208

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