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131 53i is an artificially made radioactive isotope of iodine, produced during the operation of nuclear power plants and the detonation of nuclear bombs. exposure to high concentrations of 131 53i represents a serious risk for human health. however, small doses of this radioactive isotope are put to good use in medical studies. 131 53i is widely used in treating thyroid cancer and in diagnosis of abnormal liver and kidney function.
Part A
What is emitted when the radioactive nucleus of 131 53I decays to form the stable isotope of xenon 131 54Xe?
part B
What is the energy Q released when 131 53Idecays and 131 54Xe is formed? The atomic mass of 131 53I is 130.906118 u and the atomic mass of 131 54Xe is 130.90508 u.
Part C
The newly formed xenon nucleus is left in an excited state. Thus, when it decays to a state of lower energy a gamma ray is emitted. If the wavelength of the emitted gamma ray is 3.44×10−12 m , what is the decrease in mass, ΔmXe, of the xenon nucleus as a result of this decay?

Sagot :

A . The emitted particle is β⁻.

The radiactive isotope ¹³¹ I ₅₃ decays into ¹³⁵Xe₅₄ by emitting a beta particle and an information .

¹³¹ I ₅₃ --> ¹³⁵Xe₅₄+ β⁻ +v + Q

Therefore, The emitted particle is β⁻.

B .the energy Q released when 131 53I decays and 131 54 Xe is formed is 0.966MeV

Q= Δmc²

  = (130.906118u - 130.90508u - 0.32*10⁻⁴u)(931.5MeV/c²)

  = 0.966MeV

C .  the decrease in mass, ΔmXe, of the xenon nucleus is 3.87*10⁻⁴ u.

    = hc/λ

    = [tex]\frac{(6.625*10^{-34} )(3*10^{8} m/s)}{3.44*10^{-12} }[/tex]

    = 0.3605 MeVj

Δm = (0.3065)MeV([tex]\frac{1u}{931.5Mev/c^{2} }[/tex])

  =  3.87*10⁻⁴ .

Mass is a quantitative measure of inertia in physics and a fundamental property of all matter. In effect, it is the resistance that an object offers to changes in velocity or position when a force is applied. The greater the mass of an object, the smaller the change caused by an applied force.

Mass can be experimentally defined as the inertia of a body, a measure of its resistance to acceleration (change in velocity) when a net force is applied. An object's mass also determines the strength of its attraction to other bodies. size. A 2kg cast iron weight used for scales. The decrease in mass, ΔmXe, of the xenon nucleus is 3.87*10⁻⁴ u

Learn more about mass here : https://brainly.com/question/19385703

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