4. Which isotope in each pair would you predict to be more stable? Why? 140 Cs or 135CS (b) 19Mg or 12Mg (c) 14N or 1%N
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- Short Response. Directions: Write a balanced nuclear equation for the alpha and beta decay of each of the following II. A. Alpha Decay 1. 3No 2. 25Cf 251 102 98 B. Beta Decay 1. Strontium-92 2. Potassium-42Search (Alt+Q) Pau References Mailings Review View Help There are three naturally occurring stable isotopes of magnesium: 24MB, 25Mg, and 2°Mg, which have relative abundances on Earth of 79%, 10%, and 11% respectively. Note that the atomic number of magnesium is 12. a) Calculate the binding energy (in eV) of magnesium-24, which has an atomic mass of 23.9850 AMU. The mass of a neutron is 1.0087 amu and the mass of a proton is 1.0073 amu. Using your results from parts (i) and (ii) discuss how the nucleus is held together. b) The radioisotope of magnesium with the longest half-life is magnesium-28, with a half-life of 20.9 hrs. Magnesium-28 decays through B- decay into aluminium-28. With reference to fundamental particles, describe the process which occurs in beta minus decay. Hence determine the equation for the decay of magnesium-28 into aluminum-28.The items on the right show an incomplete radioactive decay equation. Match the items at the left to correctly complete these equations. 266 1. 106Sg -> 2. 24°Cm 238U 23 Th + 90 96 3. He 23Pu + He → n + ón + ộn + 94 4. -je 266 106 → öY +
- 6. In nature, in a stable state hydrogen has two kinds of isotopes, namely 99.985% 1H with an atomic mass of 1.00783 sma and 0.015% 2H with an atomic mass of 2.01410 sma. The average atomic mass of hydrogen is .... (in sma) a. 1.00150 b. 1.00324 c. 1.00798 d. 1.01528 e. 1.07960 Note : all H have the number 1 below 1H11. Complete the following nuclear equation: [2x2=4] 92 232 U → + 1 He 64 2/0 29 Cu-> + +12 + VConsider the atomic species: 146C, 126C and 15,N. Which ones have the same number of neutrons? a. None of them b. 126C and 15,N C. All three O d. 146C and 15,N e. 146C and 126C
- Q3: The table shows two isotopes of potassium and two isotopes of calcium. Type of emission Mass of neutral atom / u Number of electrons Number of protons Number of neutrons Total mass/u Mass defect/ u Binding energy / J Mass of the electron = 0.000549 u Mass of the proton = 1.007276 u Mass of the neutron = 1.008665 u TI ***** LEG 39K Stable 38.96371 SE nda 42K ß decay a) Use data about potassium-42 to explain the concept of mass defect. 3000 41.9624 19 19 23 42.34797 0.38557 5.76 x 10-11 De RAP 39 Ca ßt decay 38.9707 440 **** ****** D 42 Ca stable 41.958634. What is the energy released/absorbed in this nuclear reaction 4N+H³C + 3He? (The atomic mass of 14 Nis 14.003074 u, and that of 1³C is 13.003355 u) MeV3. Explicitly calculate the binding energy and binding energy per nucleon for O by comparing the mass of the atom to the sum of the masses of the constituent protons, electrons, and neutrons. You may ignore the binding energy of the electrons in the problem. [MeV]