(a)Cobalt―60 is a radioactive isotope with a half-life of 5.26 years and emits beta particles. (i) Write the equation to represent the decay of cobalt―60. Ans ; 60Co → 60Ni + β−+ neutrino (ii) Calculate the decay constant of cobalt―60. (iii) Calculate the rate of decay of a sample of cobalt―60 when it has 2.5 ×1021 atoms.

Radioactive nuclei undergo disintegration with time. They emit different kind of particles and…

Answered: ) Cobalt―60 is a radioactive isotope…

Chemistry & Chemical Reactivity

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ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter25: Nuclear Chemistry

Section25.4: Rates Of Nuclear Decay

Problem 25.5CYU

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(a)

Cobalt―60 is a radioactive isotope with a half-life of 5.26 years and emits beta particles.

(i) Write the equation to represent the decay of cobalt―60.

^{Ans ; 60}Co → ⁶⁰Ni + β⁻+ neutrino

(ii) Calculate the decay constant of cobalt―60.

(iii) Calculate the rate of decay of a sample of cobalt―60 when it has 2.5 ×10²¹ atoms.

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) Cobalt―60 is a radioactive isotope with a half-life of 5.26 years and emits beta particles. (i) Write the equation to represent the decay of cobalt―60. Ans ; 60Co → 60Ni + β−+ neutrino (ii) Calculate the decay constant of cobalt―60.