One nuclide in each of these pairs is radioactive. Predict which is radioactive and which is stable: (a) 40 20Ca and 45 20Ca, (b) 12C and 14C, (c) lead-206 and thorium-230. Explain your choice in each case

Q: How can the decay half-life of a radioactive material be changed? (if can)

A: The decay half-life of a radioactive material is an intrinsic property determined by the stability…

Q: From the following numbers of protons and neutrons in the nucleus, choose the symbol for the…

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Q: etermine the binding energy of an O-1- 15.990526 amu. A proton has a mass ass of 1.008665 amu. 2.05…

A: The mass of oxygen 16 atom = 15.990526 amu. The nucleus has 8 nuetron and 8 protonThe mass of the…

Q: 8..At-219 is a nuclide produced during the decay of U-235, and At-219 in nature is estimated to be…

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Q: 24AI 25AI 26AI B+ B+ B+ Mg Mg Mg B+ Stable Stable Na 24Na B- Na B+ Stable 2"Ne Ne Ne Stable Stable…

A: 1. Magnesium

Q: Examples Identify the unknown nuclide or particle (X). • (a) X → Ni+y • (b) 215Po X + a . → • . (C)…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Calculate the mass defect and nuclear binding energy per nu- cleon of each nuclide. a. O-16 (atomic…

A: (a) Given actual mass of O-16=15.994915amu Mass of proton=1.00757 Mass of neutron=1.00893 Mass of…

Q: ii) The half-life of a radioactive element is 20 days. Calculate the time taken for the number of…

A: Given Data :  Half life of element, t1/2 = 20 days  Number of nuclei left  = 40% of initial value…

Q: The corresponding graph shows a group of points (a, b, c, d), which represent the number of original…

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Q: Page 4 2:11 4 of 8 Nuclear Done Turn over SPA5302 (2020) SECTION B Answer TWO questions from Section…

A: Step 1: Step 2: Step 3: Step 4:

Q: The hal-life of Co is 5.2 years. a) What is the decay constant for this nuclide? b) You wish to…

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Q: What fraction of a radioactive sample is left after exactly 6 half lives? Give your answer to 3…

A: Number of half life (n) = 6

Q: Using a nuclidic chart, write the symbols for (a) all stable isotopes with Z =60, (b) all…

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Q: Two rocks are found that have different ratios R' of 238U to 206Pb: R' = 0.76 and 3.1. What are the…

A: The abundance ratio is given by R'=NN206PbNU238  (1) The number of nuclei for U238  and Pb206 are,…

Q: Please don't provide handwritten solution ..

A: The objective of this question is to calculate the half-life of a radionuclide given the initial…

Q: calculate the age of the earth.

A: The decay formula is to be used. Half life of both uranium is given.

Q: Determine the nuclear composition of the following isotopes:' for example Carbon-12 has 6 protons…

A: To determine nuclear composition of given isotopes.

Q: Which nuclide(s) would you predict to be stable? Why?(a) ²⁰₈O(b) ⁵⁹₂₇Co(c) ⁹₃Li

A: To determine in which the nuclide would you predict to be stable (a) ²⁰₈O (b) ⁵⁹₂₇Co (c) ⁹₃Li

Q: Tritium (hydrogen-3) has a half-life of 12.33 years and decays by ẞ emission. Which of the following…

A: Betay decay diagram options are:

Q: 5. B-10 (D.p) reaction. Identify the: Daughter nuclide: 1. Reaction Equation: 2. 1°C "C 1°C B+ B+…

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Q: A particular rock is thought to be 250 million years old. If it contains 4.51 mg of 238U, how much…

A: Radioactivity is a process in which unstable heavy nuclei convert into more stable lighter nuclei…

Q: 5. B-10 (D.p) reaction. Identify the: Daughter nuclide: 1. Reaction Equation: 2. 1°C "C B+ B+ Stable…

A: Given, B-10(n,p) reaction

Q: 56Fe is among the most tightly bound of all nuclides. It is more than 90% of natural iron. Note that…

A: The binding energy of 56Fe (in MeV) can be represented as, Here, Z, m(1H), N, mn, m(56Fe), and c…

Q: is among the most tightly bound of all nuclides. It makes up more than 90% of natural iron. Note…

A: The binding energy is given by Binding energy= (mass of nucleons-mass of nucleus)*c2Also

Q: From the following nuclide symbols, determine the total number of nucleons, as well as the number of…

A: Nucleons consist of atomic nuclei, namely the protons and the neutrons. The total number of nucleons…

Q: The nuclide Rn-204 is the daughter nuclide resulting from the a decay of what parent nuclide? A)…

A: Daughter nuclide = Rn-204decay type : alpha decay Let the parent nuclide = YZA

Q: Iodine ( A= 131, Z= 53 ) undergoes a β- decay. What is the resulting daughter nuclide?

A: Parent nuclide : Iodine A = 131 Z = 53 Decay mode = beta negative decay

Q: Please Note: I need to understand why the other isotopes would not be a good fit for each of the…

A: In a meteorite or metamorphic rock to use 14C; likewise, there wouldn’t be U, Sm, Rb, or K in enough…

Q: (a) 212 Bi - ? + * He 83 (b) 36 95 Kr -? + e +v (c) ?- *He + 140 Ce 58 2.

A: A radioactive decay follows the conservation of charge and conservation of mass. Taking the above…

Q: Please make sure you are sufficiently precise in your answers that the BE per nucleon can be…

A: given atomic mass = 67.9248476 u  A = 68

Q: Number of Ra-223 Nuclei 60 50 40 30 20 10 0 0 LO 5 10 15 20 Time/days 25 30 35

A: This is a problem regarding the Half-life of a substance. The half-life of a substance is defined as…

Q: 24. A radioactive element X decay to a radioactive element Y which then decay to an elemen Z. If…

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Q: NUCLIDE CHARTS The nuclide of interest is Sc-49. Identify the: Decay mode: 1. Daughter nuclide: 2.…

A: 1. decay mode =β-

Q: Why does the atomic number Z determine the chemical properties of a nuclide? What differences in…

A: The atomic number is very useful to determine the chemical properties of a nuclide. The atomic…

Q: he complete decay equation for the given nuclide in the complete XN notation. Refer riodic table for…

A: Polonium-210 is a radioactive element. decay undergoes by emission of Alpha particle. Alpha Particle…

Q: The radioactive isotope Pt-188 decays into a stable nuclide after a series of 4 separate decays. The…

A: Eu63144  undergoes alpha, alpha, +beta,+beta decay...

Q: , how old is a sample if two-thirds of it is now the daughter isotope? What type of decay is…

A: We know , N=N0e-λt Where, N= remaining part of the sample N0=Initial amount of the sample λ=decay…