Nuclear Physics And Radioactivity Question 255
Question: Technitium-99 (atomic number 43, chemical symbol Tc) decays by emission of a negative $ \beta $ -particle into Ruthenium (chemical symbol Ru). A sample containing $ 0.100\mu g $ of Tc is found to emit $ \beta $ - particles at a rate of $ 135{{s}^{-1}} $ . Calculate half-life of technitium. If it is $ 1.1\times a\times 10^{4} $ years. Then value of a is.
Solution:
Answer: 9.00
BETA
