What happens to the atomic number and mass number of a nucleus when it a- Emits an alpha particle, b- Emits a positron, e- Emits an electron, d- Captures an electron e- gamma ray.?

Q: Why doesn’t the repulsive electric force of protons in the atomic nucleus cause the protons to fly…

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Q: One of the many isotopes used in cancer treatment is 198 79 Au , with a half-life of 2.70 d.…

A: Given Isotope  19879Au Half life  2.7 d To find out The mass of this isotope that is required to…

Q: certain radioactive isotope has a half-life of 4.0 hours. How much time does it take for the amount…

A: Half life = t = 4 h let the time taken in measure of no. of half lives taken to decrease be n…

Q: What nuclear reaction involves changes in the core or nucleus.

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Q: A particular isotope has a​ half-life of 74 days. If you start with 1 kilogram of this​ isotope, how…

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Q: The half-life of radio-active isotopes is 140 days. How many days would it take for the activity of…

A: Given data: the half life of radio-active isotope, t1/2 = 140 days

Q: When a uranium nucleus emits an alpha particle, its atomic number

A: The nuclear reaction of Uranium decay is given by: U92238→T90234h+H24e In the above nuclear…

Q: Two protons in an atomic nucleus repel each other, but they are also attracted to each other.…

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Q: The half-life of a certain radioactive substance is 9 years. What is the yearly decor factor?

A: Given,

Q: The half-life of plutonium-239 is 24,300 years. If a nuclear bomb released 8 kg of this isotope, how…

A: The half-life of plutonium-239 is 24,300 years. If a nuclear bomb released 8 kg of this isotope, how…

Q: An isotope has a half-life of 3 days. What percent of the original material will be left after: a) 6…

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Q: Compared with the energy it takes to separate oxygen and hydrogen from water, how much energy is…

A: According to the principle of conservation of energy, the total energy is always conserved.

Q: Cobalt―60 is a radioactive isotope with a half-life of 5.26 years and emits beta particles. i)…

A: Half life = 5.26 years Number of atoms = 2.5 ×1021

Q: If he sample of radioactive isotope has a half-life of one decade how much of the original sample…

A: Second decade means radioactive isotope will complete two half-life. So the amount of original…

Q: What is the difference between high-level radioactive waste and low-level radioactive waste?

A: In this problem, we have to tell the difference between high-level radioactive waste and low-level…

Q: A radioactive element has an original mass of 150 grams. How much would be left in the parent atom…

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Q: Thirty percent of a radioactive substance decays in two years. By what percent does the substance…

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Q: What happens when a gamma ray strikes living tissue?

A: Gamma rays are one of the energy waves in electromagnetic spectrum. They are high energy rays which…

Q: A certain radioactive material has a half-life of 10 years. You have 80 kg of the material. After 10…

A: It is given that,

Q: After 90 years, 20 % of a radioactive material decays. What is the half-life?

A: Given data:   Time period, T = 90 years    Decay constant = λ   20% of radioactive material decay…

Q: What happens when one kilogram of uranium undergoes nuclear fission?

A: to find : what happens when 1 kg of Uranium undergoes nuclear fission

Q: A certain radioactive substance has 122,200 atoms with a half-life of 12 minutes. NOTE: This is a…

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Q: how much energy (in Joules) is released by Helium -4 during a nuclear reaction?

A: Given: Helium-4  Asked to find energy released during a nuclear reaction.

Q: The isotope cesium-137, which has a half-life of 30 years, is a product of nuclear power plants.…

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Q: Q2- What happens to the atomic number and mass number of a nucleus when it a- Emits an alpha…

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Q: What is given off by beta decay?

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Q: An ancient building was known to have been built 3000 years ago. Approximately what proportion of…

A: Given that                  The age of the ancient building is (T) =  3000year                  The…

Q: Differentiate between gamma rays and X-rays.

A: Differences between gamma rays and X-rays are shown below.

Q: What are Alpha Particles?

A: Alpha particles are positively charged particles .

Q: If the half-life of an isotope is two years, what fraction of the isotope remains after six years

A: Amount of radioactive material after time t is given by: N = N0*exp(-lambda*t) lambda = decay…

Q: If the parent isotope starts with 100 grams, but your samples yield only 12.5 grams of the parent…

A: Given Data Initial mass of sample is M= 100 g Final mass is m = 12.5 g

Q: How many atoms of carbon-14 are there in Ig of carbon-12 in living organism?

A: Since there are 6.022×1023 carbon atoms in 12 grams of carbon. The 12 gram carbon atom contains,…

Q: Some people say that all things are possible. Is it at all possible for a common hydrogen nucleus to…

A: Hydrogen nucleus has only a single proton. An alpha particle is a helium nucleus and hence has two…

Q: What is gamma radiation?

A: Gamma radiation is an electromagnetic radiation having shortest wavelength as compared to other…

Q: Carbon-14 is radioactive while Carbon-12 is stable.  In your body, the ratio of C-14 to C-12 is for…

A: Half-life is the time taken for a radioactive material to reduce into half of its initial value.…

Q: Iodine-131, a beta emitter, has a half-life of 8 days. A 7-gram sample of initially pure iodine-131…

A: Half life = 8 days initial mass = 7 grams 1) After 1 half life , that is after 8 days mass left =…

Q: The half-life of the radioactive element unobtanium-53 is 5 seconds. If 176 grams of unobtanium-53…

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Q: If we start with 6.4*10^12 atoms of a radioactive material with a half life of 1.2 days, how many…

A: Half life of radioactive material is the amount of time takes for half of a particular sample to…

Q: 4. Alpha particle bombarded of nitrogen-14 to produce a proton and oxygen-17 5. Neutron bombardment…

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Q: 16.  The ejection of an alpha particle and a gamma particle from a nucleus results in

A: The alpha particle is identical with helium nuclei consisting two proton and two neutron. So…