The first six elements of the first transition series have the following number of stable isotopes: Element Number of Stable Isotopes Sc Ti V 1 Cr 3 Mn 1 Fe 4 Explain why Sc, V, and Mn each has only one stable isotope while the other elements have several.

Q: Which nuclide(s) would you predict to be stable? Why?(a) 20/8O         (b) 59/27Co          (c)…

A: To determine in which the nuclide would you predict to be stable (a) ²⁰₈O (b) ⁵⁹₂₇Co (c) ⁹₃Li

Q: Select the isotope that has the greatest stability per nucleon. 23 Na 11 56 Fe 26 84 Kr 36 H

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Q: What isotope is commonly used to determine thyroid activity and treat diseases of the thyroid?…

A: Radioisotopes are used in various field such as industrial areas, medical field etc. Like I-131 is…

Q: The nuclide 241Am is used in smoke detectors. As it decays (with a half-life of 458 years), the…

A: Radioactive decay follows the first order kinetics and every radioisotope has distinct…

Q: If the amount of a radioactive element decreases from 2.4 g to 0.30 g in 12 days, what is its…

A: Given: Initial amount of radioactive element, N∘=2.4gFinal amount of radioactive element, N =…

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

A: (a)

Q: Complete the table for the radioactive isotope. Isotope 239 Pu, Half Life (In years) 24100, Initial…

A: The amount of time required by an element to reduce to half its quantity is called its half-life.

Q: For the following radioactive reaction complete the reaction, identify the isotopes.   a)227     0…

A: While balancing nuclear reactions, we make sure that both the reactant and product side has same…

Q: What is the daughter particle of an alpha decay of 237/93 NP? A) 237/94 Pu B) 238/93 Np C) 233/91 Pa…

A: We know that, The radioactive decay in which the nucleus emit an alpha particle (He nucleus) is…

Q: Write the isotope symbol for each radioisotope.    technetium-99: iridium-192: strontium-89:

A: EXPLANATION: Isotope is defined as the chemical element which has one of two or more forms that have…

Q: A theoretical isotope X-100 has an initial mass of 500g. This isotope has a half-life of 8 hours.…

A: GivInitial mass=500g Half life=8 hours

Q: 2. Actinium-225 decays by successive emission of three a particles. a. Write the nuclear equations…

A: Q.2:  #(a):  We are given the mother nuclei, Actinium-225 or A89225c.  An α-particle has two units…

Q: 218 What is the balanced equation when Po emits an alpha particle? 84 а. 218 Po →214Pb +a 4 84 82 b.…

A: Correct answer is (a) Po84218  → Pb82214  + α24  Nuclear reactions are balanced by atomic number (Z)…

Q: Complete the table for the radioactive isotope. Isotope 239Pu, Half Life (In years) 24100, Initial…

A: Radioactive decay reactions are first order reactions. Nt = Noe-λt        (equation1) No - Initial…

Q: The isotope, 23Np undergoes the following reactions and decays in this order: neutron capture,…

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

Q: 19. Which nuclide is written in isotope notation? 18 80 O Bo 89 39Y 59 27CO iron-56

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Q: 6. No two radioactive isotopes decay at the same rate. Half-life (t2) is the time required for half…

A: Radioactive reaction involves the conversion of unstable nuclei to a stable nuclei. It is converted…

Q: choose the correct answer: Alpha emission, Beta emission, Positron emission, Electron capture, or…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Which types of processes are likely when the neutron-to-proton ratio in a nucleus is too large? I. α…

A: Given processes:

Q: 1. Which isotope in each of the following pairs should be more stable? b) P or P a) Ca or Ca 32 15…

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Q: Which of the following reactions is an example of alpha particle e O 58 Fe + 59 26 26 K+ Ge→Ar O 40K…

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Q: Which of the following nuclides have a high probability of being radioactive? I. 81 33 As II. 40 20…

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Q: Which radioactive decay is most probable? O !c → '}N + B O lịc → ZBe + O 4c → '8c + B• O %c → '}B +…

A: There are different type of decays in nuclear Chemistry to give different type of changes in nuclear…

Q: Below are four radioisotopes and the isotopes into which they decay. Tell what kind of radioactive…

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

Q: Radioactive isotopes can be used to calculate the age of materials because their decay rates are A…

A: Interpretation - To tell about radioactive isotope can be used to calculate the age of materials…

Q: For the same radioactive isotope as in the previous problem, which has t1/2 = 38.7 hr, %D how many…

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Q: Which of the following is the most stable isotope?A. Carbon-14B. Uranium-235C. Francium-227D.…

A: Half lifetime: The stability of the radioactive nucleus can be determined by the value of half-life…

Q: True or False: The ratio of unstable isotopes to stable isotopes is part of absolute-age dating.

A: There are two methods of dating: 1) Relative age dating 2) absolute age dating Relative dating- It…

Q: Which of the following reactions is an example of alpha particle emission K+ e→Ar 19 18 90Y+ 90 Sr…

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Q: A chemist wishing to do an experiment requiring "Ca²+ (half-life = 4.5 days) needs 5.0 µg of the…

A: Given,  Half-life, t1/2 = 4.5 days  Time, t = 96 h = 4 days  Current quantity, N = 5 μg  Original…

Q: Calculate the nuclear binding energy per nucleon in kJ nuc-1 mol−1 of uranium-235 (isotopic mass =…

A: Binding energy: It is the energy that releases for the formation of nucleus. Nuclear binding energy…

Q: A chemist wishing to do an experiment requiring " Ca+ (half-life = 4.5 days) needs 8.0 ug of the…

A: Given, No = 8.0 microgram t1/2 = 4.5 days = 108 h t = 72 h

Q: Which of the following nuclides are most likely to be unstable because they have neutron-to-proton…

A: To determine the stability of a nucleus, n/p ratio is used. The n/p ratio of an atomic nucleus is…

Q: Which radioactive decay is most probable? 30 14si → 1si + B si → 3Mg + a 29 1si > Al + B+ 4si → }P +…

A: Radioactive decay occurs in such fashion, where neutron to proton ratio will be closed to 1

Q: The reaction represented by the description "An atom of titanium-45 decays by beta emission" is O…

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Q: Which isotope in the list below is most likely to be used for medical purposes? O 222Rn, t/2= 3.8…

A: In the given isotopes there are almost all have there uses in their respective field. But one of…

Q: If the half-life of a radioactive substance is 4 days how much material will remain after 16 days if…

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Q: Which of the following is NOT a balanced nuclear equati 238 О а. 92U → 42a + 234 90 Th 20 + O b.…

A: We wil give all the answers here

Q: 2. Complete the following nuclear equation and identify X in each case: a.) Mg + p 4 a + X 2 12 b.)…

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Q: A radioactive element has a physical half-life Tp = 200 days and a biological half-life T, =70 days.…

A: Given : Physical half life of element = 200 days. Biological half life of substance = 70  And Amount…

Q: 2. Classify each nuclide as stable or radioactive. a. P ISP b.. Tc 30 43 C.. Tin-118 d. . 23 Pu 94

A: Radioactive isotopes are unstable atomic nucleus which can emit energy and particles like alpha,…

Q: What percent of a parent isotope would remain after two half lives?  50% 25% 13% 66

A: Correct option is (b) 25%

Q: he stable isotope of phosphorus is P-31. Predict the nuclear process for the decay of P-32. A) alpha…

A: The nuclear process for the decay of P-32 is beta decay

Q: A radioactive isotope has a half-life of 10,000 years. How old is the rock if the ratio of…

A: Ans

Q: 16. Are the following decays possible? If not, why not? a. 2Th → U + a h Pu → U + a c. P→S + e 232…

A: Starting with the first reaction,  Using the conservation of Z and A numbers we have            232…

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

A: 5d.

Q: Which of the following isotopes is most likely to be unstable? 28 14SI 46 °22Ti 38 18Ar none of the…

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