212p (a) The radioisotope 23Bi has two modes of decay-an alpha decay to an isotope of...

   

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212p (a) The radioisotope 23Bi has two modes of decay-an alpha decay to an isotope of thallium and a beta decay to an isotope of polonium. (i) (ii) Given are the following atomic masses (choose carefully!): m Write down the equation of each decay. Which type of beta decay did you write and why? Evaluate the energy released in each process. m 208 (233Bi)=211.991286 u, m n (²84P0)= 211.988868 u, m (²84PO)= 207.981246 u, 23TI)= 211.998340 u, m (281TI)= 207.982019 u, m (He)= 4.002603 u, me=0.00054857 u, and 1 u = 931.5 MeV/c². (b) Uranium isotopes: (1) (ii) Name and describe briefly the significance (for humanity) of the two primordial uranium isotopes and the key properties that set them apart. Which of the two has a longer half-life and what implications does that have for nuclear energy? The half-life of 232U is 4.468x109 yr - calculate its decay constant. 212p (a) The radioisotope 23Bi has two modes of decay-an alpha decay to an isotope of thallium and a beta decay to an isotope of polonium. (i) (ii) Given are the following atomic masses (choose carefully!): m Write down the equation of each decay. Which type of beta decay did you write and why? Evaluate the energy released in each process. m 208 (233Bi)=211.991286 u, m n (²84P0)= 211.988868 u, m (²84PO)= 207.981246 u, 23TI)= 211.998340 u, m (281TI)= 207.982019 u, m (He)= 4.002603 u, me=0.00054857 u, and 1 u = 931.5 MeV/c². (b) Uranium isotopes: (1) (ii) Name and describe briefly the significance (for humanity) of the two primordial uranium isotopes and the key properties that set them apart. Which of the two has a longer half-life and what implications does that have for nuclear energy? The half-life of 232U is 4.468x109 yr - calculate its decay constant.

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a i The equations for the decays are Alpha decay 21283Bi 20881Tl 42He Beta decay 21283Bi 21284Po e e ... View the full answer