Please make sure to show all formulas used and show all the steps used to solve . 1. What happens to the atomic number and mass number of a nucleus when it emits a) an electron: changes a neutron to a proton? Atomic Number (increases, decreases, unchanged) Mass Number (increases, decreases, unchanged) b) a positron: changes a proton to a neutron? Atomic Number (increases, decreases, unchanged) Mass Number (increases, decreases, unchanged) c) a gamma ray: just reduces the energy of the nucleus? Atomic Number (increases, decreases, unchanged) Mass Number (increases, decreases, unchanged) 2. The boron isotope 5 B into the carbon isotope 6 . What kind of particle is emitted in the decay? Choose (Proton, Neutron, Electron) What is the name of the decay? Choose (alpha decay, gamma decay, positron emission, beta decay) 64 3. A 29 V nucleus can decay by emitting an electron or a positron and also by capturing an electron. What is the final nucleus in each case? a. For electron emission, choose the right letter: 64 Choose either A. 30 C U B. 30 Zn c. 64 28 Ni D. 64 28 CU b. For positron emission, choose the right letter: 64 Choose either A. 30 (U B. 30 Zn C. . Ni D. 64 28 CV c. For electron capture, choose the right letter: . So CU B. 30 Zn C. byNi D. 6 CU4. If the half-life of a radionuclide is 1 month. is a sample of it completely decayed after 2 months? Please show all of your work on your paper a. sneer-I Yes No. 12 of it is left No. 1l4 of It is left No. US of It is left No. but there Is not a way to tell how much is left 7.2.7" 5. One-eighth of a sample of (lo \"1 remains undecayed after 54 days. What IS the half-life of this thorium Isotope. in days? 6. if 1 kg of radium (half-life = 1600 years) is sealed into a container. how much of it will remain as radium after 1600 years? After 4800 years? If the container is opened after a period of time, what gases would you expect to nd inside of it? After 1600 years: Choose (1kg, 1/2 kg, 1/4 kg, 1/3 kg) After 4800 years: Choose (1kg. 1/2 kg. 1/: kg, 'A; kg) What gases would you expect to nd inside of it? Choose (radon and hydrogen, hydrogen and nickel. hydrogen and helium, radon and helium) 7. What are the differences and similarities between fusion and ssion