The activity of a nucleus is the product of number of nuclei present in the sample and the decay constant of the nucleus.

Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 5.30 x 1011 Bq when…

A: Given data:     Decay rate, dNdt=5.30×1011Bq    Nuclei, N = 2.50 ×1015

Q: Plutonium-239 has a half life of 24100 yr. Starting with a sample of pure 239 Pu, how long would it…

A:

Q: What is the relationship between decay constant and mean life of a radioactive nucleus?

A: The mean life of a radioactive nucleus is calculated by using the formula τ=1λ , where λ is the…

Q: Suppose the decay constant of radioactive substance A is twice the decay constant of radioactive…

A: Given: Decay constant of A = 2× decay constant of B Half-life of B = 3 h.

Q: What is the ratio of the binding energy per nucleon of nitrogen 14N N to helium He nuclei. (.

A: Ratio of binding energy per nucleon of Nitrogen to helium.

Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 4.70 x 1011 Bq when…

A: Given : Decay rate = 4.70 × 1011 Bq             Nuclei = 1.70 × 1015

Q: If we split a nucleus into two smaller nuclei, with a release of energy, has the average binding…

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Q: Two nuclei have mass numbers in the ratio 27:125. What is the ratio of their nuclear radii?

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Q: Calculate the nuclear binding energy per nucleon, in MeV, for a nucleus containing 135 nucleons, of…

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Q: 10. (a) Calculate the binding energy per nucleon of a sodium nucleus (Na) in MeV nucleon". The…

A: As it is a multiple question I answered first question only. Kindly please re-submit the question…

Q: If the mass of a radioactive sample is doubled, do (a) the activity of the sample and (b) the…

A: The expression for the activity is, As radioactivity and mass of sample is directly proportional to…

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

A:

Q: Graph of average binding energy per nucleon, MeV (y axis) against nucleon number, A (x axis)

A: The schematic graph of average binding energy per nucleon (in MeV) against nucleon number (A) is…

Q: The decay constant of a radioactive source is 752 per year. Then its half- life equals: *

A: Step:1   The  Time  taken  for a radioactive atom    to  disintegrate  to half  of its  original…

Q: When a nucleus undergoes fission, the two daughter nuclei are generally radioactive. By which…

A: Nuclear fission is the process when a heavier nucleus breaks into two lighter nuclei.

Q: Two nuclei have mass number in the ratio 1 : 3. What is the ratio of their nuclear densities?

A: Given that, Two nuclei have the mass number in the ratio 1 : 3. The nuclear densities of nuclei A is…

Q: The maximum kinetic energy of the beta particle emitted during the decay of {60}^_{27}Co.

A: When beta particle is emitted during the decay of C2760o it is convert in to N2860i…

Q: Calculate the binding energy per nucleon for the atom of Uranium-235

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Q: Binding energy per nucleon for an element is 7.14 MeV. If the binding energy of the element is 28.6…

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Q: A radioisotope was injected in the human body. The half-life of the radioisotope is T/2 = %3D 6…

A: Given: T1/2=6 hours

Q: The mass defect arises because the sum of masses of the component nucleons is less than that of the…

A:

Q: A tree falls in a forest. How many years must pass before the C activity in 1.00 g of the tree's…

A: mass = 1 g number of atoms = number of moles * avogadro number  = (1/14)(6.022 * 1023) = 4.3 * 1022…

Q: After three half lives have gone by, what fraction of a sample of a radioactive isotope remains?

A: A half-life is a time period during which nuclei of radio-active sample becomes half of its initial…

Q: A sample of radioisotope has a decay constant of 9.976✕10-7 s-1 and prepared with an initial…

A: Given data: The decay constant of a sample of a radioisotope is, The initial activity of a sample…

Q: Which of the following is the correct daughter nucleus asso- ciated with the beta decay of 18H£? (a)…

A: Beta Decay - When a nucleus have too many number of neutrons compared  to number of protons, then…

Q: In a sample of radioactive material, what percentage of the initial number of active nuclei will…

A: Concept and Formula -                               let, initial no of active nuclei = N0…

Q: As the mass number of nucleons increases, what happens to the binding energy per nucleon?

A: discuss about the binding energy  with increase in mass number of nucleon.

Q: How many half lives must pass for the mass of a radioactive sample to decrease to 35% of the…

A: Half life of a radioactive sample is the time required for the sample to reduce to half of its…

Q: What is the binding energy per nucleon of 262Bh? The mass of the atom is 262.1231 u.

A: The equation for the binding energy is given by,

Q: Calculate the binding energy per nucleon of 4He , the alpha particle.

A: The total binding energy is  B.E=∆mc2 where ∆m is the mass defect and c is the speed of light.  The…

Q: Given that radioactive cobalt-60 has a radioactive constant equal to 3.8 x 10° s determine its…

A: Given information: Here, λ is the radioactive constant or decay constant.

Q: You find a 37.2 g fossilized bone that has an activity of 0.024 counts per second. How old is the…

A: A living matter has 1.3×10-10 % of C-14, and the half-life of C-14 is 5730 years. Thus, determine…

Q: By natural radioactivity, U-238 emits an alpha particle. The heavy daughter nucleus is called…

A: In alpha decay, the atomic number of the daughter nucleus will be less than that of the parent…

Q: nucleon of the 238-92 U nucleus. binding energy binding energy per nucleon

A: Given 238-92 U nucleus No. Of proton =92 No of neutron = 238-92 =146 Mass of nucleus in atomic mass…

Q: What becomes of the “lost” mass per nucleon in fission and fusion reactions?

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Q: Consider a radioactive sample. Determine the ratio of the number of nuclei decaying during the first…

A: Radioactive decay:

Q: 22. The nucleus of iron Fe is more stable then the nucleus of bismuth 203Bi. Which of the following…

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Q: Is the mass of an atomic nucleus greater or less than the sum of the masses of the nucleons…

A: The nucleons combine together to form an atomic nucleus by using binding energy, and this binding…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.