I0. Radium has a half-life of 1600 years. This means that after four half-lives, the total radioactivity left will be * A. ½ B ¼ C. 1/8 D. 1/16

Q: Krypton-79 has a half-life of 34.50 h. After 138.0 h, 54.25 kg of this radioistope is left. How much…

A: Given, the half-life of Krypton-79 is 34.50 hthe amount of radioisotop left after 138.0 h is 54.25…

Q: 5. The following nuclei do not lie in the band of stability. How would they be expected to decay? a.…

A: Radioactive decay generally occurs to change the N/Z (neutron/ proton) ratio to achieve the greater…

Q: Complete the table for the radioactive isotope. Half-life Initial Amount After Isotope (years) |…

A:

Q: A 116.8 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A: Given- Initial amount=116.8ng Final amount=14.60ng Time=47days

Q: Which type of nuclear decay is the most difficult to block and needs a very thick sheet or a block…

A: Radioactive decay is defined as a process by which an unstable atomic nucleus loses energy by means…

Q: A radioactive isotope has a half-life of 12.0 seconds. How much of a 100 gram sample is left after…

A: Given  Half life of radioactive isotope ( t1/2 )  = 12 second  Initial Mass of sample   ( A )0 = 100…

Q: Select the isotope that has the greatest stability per nucleon. A. 56 Fe 26 B. 131 Xe 54 C. 23 Na…

A: Here we have to select the isotope which has greatest stability per nucleon-

Q: Which of the following is NOT a possible result of nuclear decay? a. ultra violet radiation O b.…

A: Answer - The correct option is - (a) Ultraviolet radiation    Nuclear  decay is the process by which…

Q: Which one of the following is a correct representation of an alpha particle? 4, OA SHe 2 B.H Oc H…

A: Alpha particle is a helium nucleus which contains two protons and two neutrons and hence its mass…

Q: A 1.00 g sample of a radioactive isotope decays such that 0.675 g will remain after 5.43 yr.…

A: The initial amount of the sample The amount left at time t, [A] = 0.675 gTime (t) = 5.43 yearsHalf…

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

A: beta decay results in the atomic number but not in the mass number gamma radiation results in the…

Q: Using the diagrams below, label the nuclear process as alpha, beta, or gamma radiation. Explain how…

A: The given reaction is : P82214b→B83214i + e-10

Q: The radioactive isotope 1 Pa decays by beta emission. If the mass of a sample of protactinium-234…

A: The question is based on the concept of nuclear chemistry. we have to calculate the half life of the…

Q: An ancient wood sample is known to be 2500 years old. a. Knowing that the half-life of carbon is…

A:

Q: 28. To attain stability, those with atomic number greater than 83 must undergo what type of ecad

A: Those atomic number greater than 83 gain stability by following method

Q: You live one mile from a spot where a nuclear bomb was accidentally detonated. Assuming no…

A: Since Gamma rays are high energy electromagnetic radiation; the others are particles that move…

Q: Which of the following statements must be TRUE regarding nuclear fusion? O A The mass of the…

A: Nuclear fission: In a nuclear fission reaction, the nucleus of an atom splits into two or more…

Q: a 45.91 mg sample of a pure radioisotope has a half-life of 52 days, what will be the mass of the…

A: Given 45.91 mg sample of a pure radioisotope has a half-life of 52 day mass of the original…

Q: Type of radiation: C. Explanation: Proton e Neutron 214Pb 82 214

A: when the ratio of neutrons to protons in the nucleus is too high. An excess neutron transforms into…

Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 31.3 days decay…

A: Given, Half life = 31.3 days  Time , t = ?

Q: Samples of the following isotopes in pure form, each containing the same number of atoms, are taken.…

A:

Q: Which of the following does not describe beta particles? A. Beta particles can be stopped by a sheet…

A: Beta particle (β) is a type of high speed radiation with a negative charge.

Q: Select the isotope that has the greatest stability per nucleon.

A:

Q: 35. When Nd-144 undergoes alpha emission, it changes into A. Nd-140 B. Ba-140 C. Sm-140 D. Ce-140

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: In the collision of Mg-12 with a proton, products produced are an alpha particle and a/an    a. Li -…

A: In the collision of Mg-12 with a proton, products produced are an alpha particle and a/an -

Q: Predict the likely type of radioactive decay for each isotope below. Explain. a. 24Ne b. 119Sb C.…

A: As per rule we will solve first three sub-parts of the question. Kindly repost other parts as a…

Q: What particle or type of radiation is missing in the nuclear equation below? in periodic table*…

A:

Q: The nuclide 230Th decays to ²38Ra by a emission. The mass of 230Th is 230.033131 amu, of ²2Ra is…

A:

Q: A representation of an alpha particle would be

A: The alpha particle, released in nuclear reaction, has the high energy, and the atomic number and…

Q: 3 Carbon-14 has a half life of about 5,730 years. If an archeologist examines a bone and finds 6.25%…

A: Given :  Half life of C-14 = 5730 years  % of C-14 = 6.25 %

Q: Solve the following problems and show complete solution. A. Half life of Sr90 is 29 years. What…

A: A.     Half life of Sr-90 ( t1/2) = 29 y           Let ' t '    =  100 y       n × t1/2   =  t…

Q: If a 50.42 mg sample of a pure radioisotope has a half-life of 38 days, what will be the mass of the…

A:

Q: Fission can be induced when \gamma -rays are sorbed by a heavy nucleus. What energy \gamma - s are…

A: Depending on the particular nucleus and its energy levels, different gamma ray energies are required…

Q: 2. lodine-123 has a half-life of 13.2 hours. Its gamma decay allows for photons of different colors…

A: a) The gamma decay of Iodine-123 can be represented by the following equation: 123I → 123Te + γ In…

Q: a. Type of radiation: Explanation: Proton He Neutron 92 234Th 90

A:

Q: A radioactive nuclide that has a life of 5 hours has an initial amount of 50 grams. After 15 hours,…

A: The formula for the ratio of the initial amount and amount after time t is, NN0 =12tTwhere,N0 =…

Q: Which process generates energy in a nuclear power plant? O A. Fission O B. Fusion O C. Half life O…

A: Nuclear power plants are a type of power plant that uses the process of nuclear fission in order to…

Q: Which of the following are true about gamma emission?    A. Gamma radiation results in changes to…

A: A. Gamma radiation results in changes to the mass number and atomic number of the decaying nuclide…

Q: 48  of 48 How long for Ru-106 (half-life: 1 year) to decay down to 0.50% of its original amount? A.…

A: Since, you have asked multiple question, we will solve the first question for you. If you want any…

Q: In 1913, an element was known to “emanate” from radium-226 by alpha emission and then to decay to…

A: The symbol of an alpha particle is 2He4.

Q: alues if needed for this question. grams in 1.80 seconds, what is the half-life of magnesium-20?

A: In this question we want to calculate the half life. Half life is a time where Concentration of…

Q: Which one of each pair of nuclides would you expect to have thelonger half-life?a. Cs-149 or Cs-139…

A: The nuclides which have longer-half life has to be given, One can find the stability of the nuclide…

Q: Phosphorus-32 Original amount: 30.0 g Amount left: Total time: 114.5 d Half-life: 14.3 d Number of…

A: We can determine the solution by the following formula : t = 2.303k log NoNk = 0.693thalf Where t =…

Q: A 1.00 g sample of a radioactive isotope decays such that 0.675 g will remain after 2.43 yr.…

A: Radioactive decay follows the first order kinetics.k = (2.303/t) log (Ao/A)t1/2 = 0.693/kWhere, Ao =…

Q: Which particle completes this equation?  226                                   222 Ra        -->…

A:

Q: When a nucleus undergoes alpha decay ___. Its atomic number increases by 2. A. Its mass number…

A:

Q: A 1.00 g sample of a radioactive isotope decays such that 0.675 g will remain after 5.54 yr.…

A: Radioactive decay follows the first order kinetics.k = (2.303/t) log (Ao/A)t1/2 = 0.693/kWhere, Ao =…

Q: 29. When high energy radiation knocks an electron out of an atom that it strikes, a is formed. a.…

A: