JEE Main 20207 JanuaryMorning Shift
- Exam
- JEE Main
- Year
- 2020
- Date
- 7 January
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Chemical Kinetics
JEE Main 2020 · 7 January · Morning Shift · Chemistry · Chemical Kinetics
During the nuclear explosion, one of the products is ^ 90 Sr with...
During the nuclear explosion, one of the products is with half life of years. If of was absorbed in the bones of a newly born baby in place of how much time, in years, is required to reduce it by if it is not lost metabolically ____________.
Correct answer
0
Step-by-step solution
Radioactive disintegration is always a first order reaction for a first order reaction. Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation.
where \left[{A}_{o}\right] = concentration at time ‘t’
{t}_{\dfrac{1}{2}} = \dfrac{0.693}{K} K = \dfrac{0.693}{{t}_{\dfrac{1}{2}}} = \dfrac{0.693}{6.93} ⇒ 0.1yent{s}^{- 1} {t}_{90%} = \dfrac{2.303}{0.1} log\dfrac{\left[100\right]}{\left[10\right]} {t}_{90%} = 23.03 years.
where \left[{A}_{o}\right] = concentration at time ‘t’
{t}_{\dfrac{1}{2}} = \dfrac{0.693}{K} K = \dfrac{0.693}{{t}_{\dfrac{1}{2}}} = \dfrac{0.693}{6.93} ⇒ 0.1yent{s}^{- 1} {t}_{90%} = \dfrac{2.303}{0.1} log\dfrac{\left[100\right]}{\left[10\right]} {t}_{90%} = 23.03 years.