Imagine that all of the electrons from the given cobalt (Co)(Co) isotopes are stripped off so that only the nucleus is left behind. Which isotope's nucleus would be the most massive? A.)Co55 B.) All Co nuclei have the same mass. C.)Co57 D.)Co59 E.)Co61 Which nucleus would have the largest positive charge? A.Co61 B.All CoCo nuclei have the same charge. C. Co55 D. Co59 D. Co57

Answer the following questions regarding the radioactive isotope radium-226. A.Write a nuclear equation for when this nucleus undergoes beta decay.   B.What is the binding energy of a radium-226 nucleus? The mass of radium-226 is 226.02541 amu.   C.A rock obtained by geologists was found to obtain 1.38 mg of radium-226. Later studies confirmed that 922 years prior, the rock contained 34.6 mg of radium-226. How many half-lives have elapsed?   D.Based on your answer to Question C, determine the half-life of radium-226.   E.Based on your answers to Questions C & D, determine the rate constant of the beta decay of radium-226

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ms tions urse 4. (P7) The isotope Silver-107 undergoes a gamma decay. Write the reaction equation and determine the identity of the daughter nucleus. (P19) A nucleus of element 114 is produced by fusing calcium - 48 with plutonium - 244. Write the reaction equation assuming three neutrons are also released. 5. EC (P20) The most abundant isotope of lithium, Li-7, contains 3 protons and 4 neutrons and has a mass of 7.01600 u. What is the mass defect for this nucleus in atomic mass units? In Kg?

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 1H

3D. Write the equation for the alpha decay of Thorium-232. b) Write the element that is formed in the alpha decay of Thorium-232. Your answer

19B. If the electron with a charge of -1.6 x 10^-19C is 79.35 picometers (7.935 x 10^-11 m) from the nucleus where the proton has a charge of +1.6 x 10^-19C, a) Use Coulombs Law to determine the F(electric) between the proton and the electron. b). Determine the Strong nuclear force F(strong) between the proton and the neutron if F(strong) = 137 F(electric). Your answer e- p+ n Hydrogen-2, deuterium mass number: 2 Electron shell

b) Complete the following decay reaction by identifying both the temporary nucleus (??) and the end product (?) that it decays into. In this case, sodium-23 is bombarded with protons, forming a short-lived nucleus which quickly undergoes alpha decay. 2Na+H → (??) → (⁄?) + ª Enter the chemical symbol for the temporary nucleus: Enter the mass number for the end product, A = Enter the atomic number for the end product, Z = Enter the chemical symbol for the end product: AV A/ AV 10

Complete the following nuclear reactions. (Include enough information to unambiguously identify the missing species.)   see image attached

3C. Write the equation for the beta-positive decay of Potassium-40. b) Write the element that is formed in the beta-positive decay of Potassium- 40. Your answer