In the gamma decay of a nucleus   A) the mass number of the nucleus changes whereas its atomic number does not change B) the mass number of the nucleus does not change whereas its atomic number changes C) both the mass number and the atomic number of the nucleus change D) neither the mass number nor the atomic number of the nucleus changes

Q: How does the mass number of an element change when it undergoes alpha decay? decrease by 2 decrease…

A: In Alpha decay of an radioactive nucleus , the mass and charge of the daughter nucleus decreases by…

Q: Another series of nuclear reactions that can produce energy in the interior of stars is the cycle…

A: a).The reaction is,

Q: Your body contains several radioactive isotopes. Approximately 20% of the radiation dose you receive…

A: Beta-decay is a process that takes place in a radioactive atom. The original nuclide is converted…

Q: The Strontium-90 isotope that we used in this lab has a half-life of 28.1 years. In our calculations…

A: The decay constant of the strontium-90 isotope is

Q: One hundred kilograms of a certain radioactive substance decay to 40 kg after 10 years. How much…

A: Given data The initial mass of the radioactive substance is: Xo = 100 kg The mass of the radioactive…

Q: Consider the nuclei Sn with an atomic number of 50 and mass number is 118 . Determine its mass…

A:

Q: Radium-226 decays by emitting an alpha particle. A 0.5-gram sample of pure radium-226 emits…

A:

Q: In which of the following is it possible for an entirely new atom to form. (Mark all that apply)…

A: Given problem is based on the Nuclear Physics concept. We have asked, in which process entirely new…

Q: A radioactive sample has a mass of 185 grams. How much remains after 2 half lives?

A:

Q: A radioactive source consists of 6.4 x 10^11 atoms of a nuclide of a half-life of 2 days. A second…

A: According to question we need to find--- After how many days will the number of radioactive atoms…

Q: After a nucleus undergoes four gamma decays, its’ atomic number   A. decreases by 8   B. does…

A: Given data: Nucleus undergoes four gamma decays Required: Change in atomic number of nucleus

Q: Calculate the binding energy of helium nucleus assuming it has a mass of 4.003874

A: The nuclear forces that bind the nucleons together are stronger than the electrostatic attraction…

Q: Iodine-131 is one of the most important isotopes used in the diagnosis of thyroid cancer. One atom…

A: Mass of 131Iodine: M = 130.906114 amu  Number of protons in 131Iodine:: p = 53 Nuber of neutrons in…

Q: When a star has exhausted it's hydrogen fuel it may fuse other nuclear fuel's at temperature is…

A: a) Write the equation of process when two alpha particles fused together. The nucleus will be…

Q: isotope polonium-209 undergoes alpha decay. Write the reaction equation and determine the identity…

A: In alpha emissions mass number decreases by 4 and atomic number decreases by 2.

Q: Plutonium 2 Pu nucleus produced in a nuclear reactor undergoes alpha decay. Determine the daughter…

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Q: A radioactive nuclide that has an atomic number of 53 and a mass (nucleon) number of 131 is used to…

A:

Q: In beta decay what is emitted: A) electron B) proton C) neutron D) All of the above

A: Given:- In beta decay what is emitted: A) electron B) proton C) neutron D) All of the above

Q: 4. Consider four separate (unbound) nucleons (two protons and two neutrons) vs. a Helium nucleus…

A: Sum of the mass of the four unbounded nucleons are more than the mass of the resulting helium nuclei…

Q: When an unstable nucleus decays by emitting an alpha particle, the atomic mass number of the nucleus…

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Q: What makes a radioactive decay an alpha decay

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Q: When a nucleus undergoes alpha decay, an electron is ejected from the nucleus. (True or False)…

A: during alpha decay alpha particle (He24) is ejected from the nucleus hence the first statement is…

Q: A beta particle is A.a form of highly penetrating radiation . B.an electron emitted by a larger…

A: The transformation of a neutron into a proton and an electron (followed by the emission of the…

Q: Suppose a radioactive material, UPinium, was found under the chemistry building in 2000 (year). In…

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Q: 1Kg of Uranium-235 contains about 2.55x10^24 atoms. Calculate the energy (in MeV) that the total…

A: Fission may take place in any of the heavy nuclei after capture of a neutron. However, low-energy…

Q: A significant fraction of the radiation dose you will receive during your life comes from…

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Q: A sample of 1000 radioactive atoms has a 10 minute half-life. How old is the sample when 750 atoms…

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Q: Fluorine-18 undergoes positron decay. Write the nuclear reaction for this decay. (Omit…

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Q: Consider the following reactions: A. uranium-238 emits an alpha particle; B. plutonium-239 emits an…

A: Given data:   The Uranium – 238 emits an alpha particle. The  Plutonium – 239 emits an alpha…

Q: _was the first to calculate how much more energy an atom release in radioactive decay that it does…

A: F. Soddy was the scientist

Q: The half-life of a radioisotope O indicates how tightly the nucleons are bound together O determines…

A: The half life of radioisotope is defined as the the amount of time taken for 50% of the original…

Q: The activity of a nucleus is the product of number of nuclei present in the sample and the decay…

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Q: In a radioactive substance at t = 0, the number of atom is 8 x 104 . its half-life period is 3 yr.…

A:

Q: Name two isotopes that undergo nuclear fission.

A: The two isotopes that undergo nuclear fission are Plutonium - 239 and Uranium - 235.

Q: The activity of a radioactive sample decreases from 135 kBq to 15 kBq in 22.1 s. Calculate the…

A: Given  Initial activity A0=135kBq Final activity A=15kBq time t=22.1 s

Q: Another series of nuclear reactions that can produce energy in the interior of stars is the cycle…

A:

Q: In 4 years, 3/4 of nuclei of a given radioactive substance is decayed. What is the half- life of the…

A: Definition of  Half life:- Half life of a radioactive sample is defined as the time elapsed before…

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

A: Radioactive decay:

Q: The isotope cadmium-122* undergoes gamma decay. Write the reaction equation, and determine the…

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Q: In radio-pharmacy Alpha, Beta-plus, Beta-minus and Gamma decay are all different forms of…

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Q: Experimental fusion reactors use deuterium and tritium fuel as their energy sources. The products of…

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Q: Why does the fusion of small nuclei produce energy

A: Fusion: Fusion is the process in which two ore more smaller nuclei (such as hydrogen like atoms)…

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.