TRUE OR FALSE (n)  Hydrogen­1 has one neutron in its nucleus, hydrogen­2 has two neutrons in its nucleus, and hydrogen­3 has three neutrons. (o)  All isotopes of an element have the same number of electrons. (p)  Most elements found on Earth are mixtures of isotopes. (q)  The atomic weight of an element given in the Pe­riodic Table is the weighted average of the masses of its isotopes found on Earth.  (t)  The density of a nucleus is its mass number expressed in grams.

Q: The relative atomic mass of isotope iron-56 (5626Fe) is 55.93494 u. If the nuclear binding energy…

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Q: A molybdenum isotope (Z=42 Z=42) undergoes beta negative decay (β−). Based upon conservation of…

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Q: An archeologist discovers the bones of a person who appeared to have been dead a very long time.…

A: Half-life of radioactive element: = 5.73 x 103 y Activity of radio active element: A(t) = 0.259 Bq…

Q: Equation below shows the fission reaction, where X and Y are the fission fragments in the process. =…

A: Nuclear fission is a process in which the nucleus of an atom gets split into two lighter nuclei as…

Q: What is the binding energy required for the element Beryllium, which has an atomic mass of 9.01 u?…

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Q: In an alpha particle scattering experiment, it is determined that the ratio of the cross-sectional…

A: Given Data: The radius of an atom is, Ra=1.40×10-10 m The cross-sectional area of the target nucleus…

Q: The uranium in the earth’s crust is 0.7% 235U and 99.3% 238U. Two billion years ago, 235U comprised…

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Q: The isotopes of U8 and U5 occur in nature in the ratio 140 : 1. Assuming that at the time of earth's…

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Q: •3 @ A thermal neutron (with approximately zero kinetic energy) is absorbed by a 23U nucleus. How…

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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: 81 Figure 42-20 shows part of the decay scheme of 257NP on a plot of mass number A versus proton…

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Q: Identify the unknown particles X and X' in the following nuclear reactions. (In parts (a) and (b),…

A: Given particle X and X' We have to find missing product or reactant  in(a) and (b) Your answer is…

Q: Identify X in the following nuclear reactions: (a) H + °Be →X+n; (b)12C + 1H X; (c)15N+4H-4He +X.…

A: In nuclear reaction atomic number ( nuclear charge ) and mass number remains conserved.

Q: A pure sample of 226 Ra contains 2.0 x 10^14 atoms of the isotope. If the half life of. 226 Ra = 1.6…

A: Given that, No. of atoms of a pure sample of 226 Ra is 2.0 x 1014 atoms. The half-life of the sample…

Q: A nuclear reaction is represented by: "N+H→C+He Given N has a mass of 14.003 074 u; C has a mass of…

A: Atomic number is defined as the number of protons in the nuclei and mass number is the total number…

Q: The first order decomposition of some radioactive isotope is 3 days. Approximately what percentage…

A: Solution: as given that The first order decomposition of some radioactive isotope is 3 days. To…

Q: In nuclear fusion, two light nuclei are fused together to form a more stable, heavier nucleus. True…

A: Nuclear fusion: - It is a reaction in which two or more nuclei are combined together to form more…

Q: When a uranium isotope U is bombarded with 92 89 a neutron, it generates 36 Kr , three neutrons and:

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Q: How many neutrons are emitted when a uranium-238 nucleus (Z = 92) is bombarded with a deuteron (2…

A: Parent nuclei = Uranium (Z=92 , A=238) Bombarding atom = Deutron (Z=1 , A=2) Daughter nuclei =…

Q: Identify the unknown particles X and X' in the following nuclear reactions. (In parts (a) and (b),…

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Q: How many protons and how many neutrons are in (a) 3H, (b) 40Ar, (c) 40Ca, and (d) 239Pu?

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Q: | The complete expression for the decay of the radioactive hydrogen isotope tritium may be written…

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Q: Let Z denote the atomic number and A denote the mass number of a nucleus. The number of neutrons in…

A: Given that, Z denotes the atomic number A denotes the mass number We know that, Atomic Number =…

Q: When a nucleus α decays, does the α particle move continuously from inside the nucleus to outside?…

A: When a nucleus a decay occurs then the total number of nucleons that can get out of the nucleus from…

Q: On absorption of a single neutron, plutonium Pu-239 can undergo fission into xenon Xe-134 plus…

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Q: Two nuclei having atomic numbers Z1 and Z2 approach each other with a total energy E. (a) When they…

A: Since there are multiple sub-parts posted, we will answer the first three sub-parts for you. If you…

Q: One isotope contains an equal number of protons and neutrons, another isotope of the same element…

A: Let AM1 be the atomic mass of first isotope and AM2 is the atomic mass of second element.  We know…

Q: Natural Uranium, as found on earth, consists of two isotopes in the ratio of ^ 235 U/ ^ 238 U=0.07…

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Q: In beta decay, the energy of the electron or positron emitted from the nucleus lies somewhere in a…

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Q: Equation below shows the fission reaction, where X and Y are the fission fragments in the process. 1…

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Q: All the very heavy atoms found in the earth were created long ago by nuclear fusion reactions in a…

A: Given values: Half life of U235,  t12(U235)=7.04×108 yr Half life of U238,  t12(U238)=4.47×109 yr…

Q: ii) Approximately what is the value of mass number A for a nucleus whose radius is 3.6 x 10-15 m ?…

A: Given Radius = 3.6 × 10-15 m

Q: How many neutrons does the element  given as 24 x 50 have?

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Q: 25.3. Draw a labelled sketch of the relation N= N,e. An element has a stable isotope 139 %3D 138 10…

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Q: The rest mass of a proton-is 1.0072764666 u and that of a neutron is 1.0086649158 u. The 4He nucleus…

A: Mass of proton(mp )=1.0072764666u mass of neutron(mn)=1.0086649158 u mass of helium nucleus(mHe…

Q: The binding energy of a hydrogen atom is 13.6 eV. (a) What is the decrease in mass that occurs when…

A: Given, Binding energy of Hydrogen atom is, 13.6 eV

Q: The suitable condition used in the fusion reaction is O a. Absorptive electrostatic forces are…

A: We are asked about the correct statement with reference to the nuclear fusion reaction.

Q: One of the waste products of a nuclear reactor is plutonium-239 (239pu). This nucleus is radioactive…

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Q: Consider a chain of radioactive decays 1-2-3, where nuclei of type 3 are stable. We assume that we…

A: Since you have posted a question with multiple subparts, we will solve first three only as per…

Q: The uranium isotope 238^U undergoes spontaneous alpha decay, becoming 234^Th. Calculate the recoil…

A: Given: Mass of alpha particle = 4  amu  Mass of thorium  = 232 amu  Velocity of alpha particle = 1.4…

Q: The Half life of Iodine-131, used in thyroid treatments, is 8.0d. At a certain time, an amount of…

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Q: he half-life of the radioactive nucleus 88 Ra 226 is 1.6 × 10 3 yr. If a sample initially contains…

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