question_answer

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.

Answer:

9.00