Rn decays into Po by emitting an α–particle with half life of 4 days. A sample contains…
Physics · JEE Main · NTA Exams — Atoms and Nuclei
Rn decays into Po by emitting an α–particle with half life of 4 days. A sample contains 6.4 × 1010 atoms of Rn. After 12 days, the number of atoms of Rn left in the sample will be
- 3.2 × 1010
- 0.53 × 1010
- 2.1 × 1010
- 0.8 × 1010
Answer
(D) 0.8 × 10 10
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- In Bohr’s Model of hydrogen atom. The ratio between the period of revolution of an electron in orbit of n = 1…
- The half-life of a radioactive substance is 20 min. The approximate time interval (t 2 – t 1 ) between the…
- Hydrogen ( 1 H 1 ), Deuterium ( 1 H 2 ), singly ionised Helium ( 2 He 4 ) + and doubly ionised lithium ( 3 Li…
- The half life of radon is 3.8 days. After how many days will 1 10 th of the radon sample remain behind
- Light of two different frequencies whose photons have energies 1 eV and 2.5 eV successively illuminate a…
- Energy levels A, B, C of a certain atom correspond to increasing values of energy i.e., E A B C . If λ 1 ,λ 2…
- Consider the fission reaction _ 92 ^ 236 U X ^ 117 + Y ^ 117 + n + n i.e. two nuclei of same mass number 117…
- Starting with a sample of pure 66 Cu, 7/8 of it decays into Zn in 15 min. The corresponding half-life is
More Atoms and Nuclei questions · Browse all practice questions