The mean life (τ) and half life (T1/2) of a radioactive element are related as:
A. τ = 2T1/2
B. τ = \(\frac{\mathrm{T}_{1 / 2}}{0.6937}\)
C. τ = \(\frac{\mathrm{T}_{1 / 2}}{2}\)
D. τ = 0.6931 T1/2
Answer:B
The mean life (τ) and half life (T1/2) of a radioactive element are related as:
A. τ = 2T1/2 B. τ = \(\frac{\mathrm{T}_{1 / 2}}{0.6937}\) C. τ = \(\frac{\mathrm{T}_{1 / 2}}{2}\) D. τ = 0.6931 T1/2