The radioactive element francium undergoes a series of nuclear decays, eventually forming a stable isotope of lead. One part of the process involves francium-221 undergoing two alpha decays, followed by a beta decay. What is the element formed after this portion of the decay series?

Q: Which of the following processes decreases the atomic number by two?   A) gamma-ray production B)…

A: Since the atomic number is decreased by 2 Hence it means the atomic number of the particle produced…

Q: What is the primary factor that determines whether an nucleus is stable or unstable?

A: The nucleus is the small region that lies at the center of an atom. It is discovered in 1911 by…

Q: Part A The belt of nuclear stability ends with the element bismuth O radon O polonium O astatine O…

A: To give: The belt of nuclear stability ends with which element.

Q: how many nucleons are there in 56^Fe

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles…

Q: Write equations for these processes. a) Thorium-230 decays by alpha emission to form a lighter…

A: Nuclear transmutation: The process in which one chemical element is converted to another by…

Q: b Po undergoes four decay reactions: a, B, a, B. Step 1. 218 Po undergoes a decay to give 14 Pb 84…

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Q: Why is ⁴⁰₂₀Ca the most stable isotope of calcium?

A: The atoms of the same element which have the same atomic number but different mass number are called…

Q: Which of the following elements would be expected to undergo beta decay? O 210 Po 84 56 Fe S O 137…

A:

Q: Which radioactive process produces an X-ray? A. Positron Emission B. Electron Capture C. Beta…

A: A form of high energy electromagnetic radiation is known as X- rays. Energy is released in the form…

Q: 13N is more likely to undergo electron capture than alpha particle decay. Explain why

A: In brief the stability of a nucleus depends on n/p ration or n/z ratio (neutron to proton ration)…

Q: Polonium isotope Po-218 emits alpha-particle and then the nucleus of Pb obtained emits an electron.…

A: Given that parent element is Po - 218 First decay is alpha decay then in second step electron is…

Q: C Po undergoes four decay reactions: a, B, a, ß. Step 1. 218 Po undergoes a decay to give 84 Step 2.…

A: Nuclear chemistry is the branch of chemistry in which we deal with positron emission, electron…

Q: 4. The equation shows the radioactive decay of iodine-131. 131 131 Xe +particle 54 53 What is the…

A: I53131→X54131e+Particle Notation of nuclear reaction As we see in the above radioactive decay the…

Q: During a nuclear decay a 238U atom can break apart into a helium-4 atom and one other atom. Assuming…

A: The property of a nucleus emitting α, β and γ rays is known as radioactivity and the substance…

Q: The krypton isotope 36?? 81 is the product of reactions when cosmic rays strike the atmosphere. It…

A: Beta-, β-10 has a net -1 charge and no mass, Hence after β-10 decay, the mass number remains the…

Q: Radioactivity! What is the most likely mode of decay for Xe-120?

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Q: The first atomic explosion was detonated in the desert north of Alamogordo, New Mexico, on July 16,…

A:

Q: What is meant by the half-life of a radioactive element?

A: The elements which have an unstable nucleus in their atoms and hence to get stability they emit…

Q: The largest number of stable nuclides have an [ Select ] v number of protons and an [ Select ]…

A: Number of neutron and number of proton affect the stability of nucleus

Q: The following nuclear equation shows a plutonium target being hit by an alpha particle forming…

A: Given nuclear reaction of plutonium being hit by alpha particle to produce curium-243 and finally…

Q: Which of the following describes the reaction: 3° Bi + He + 206 TI 81 O alpha decay reaction O beta…

A: This is alpha decay reaction. In beta decay reaction, a beta particle is emitted from the atomic…

Q: Pb undergoes four decay reactions: ß, a, ß, ß. Step 1. 214Pb undergoes ß decay to give “Bi 82 Step…

A: Given,

Q: Which of the following describes the reaction: ° Bi → He + 0 TI 81 83 alpha decay reaction O beta…

A:

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: 12. Which of the following particles has no mass?   A. neutron   B. gamma      C. positron…

A: 12. We have to choose the following given particles has no mass as follows in step 2:

Q: Why does Sodium (Na) have fewer stable isotopes than Magnesium (Mg)?

A: The stable isotopes of an element depend on n/p ratio, if n/p close to 1 then it is likely to be…

Q: A) Alpha Decay of U: B) Beta Decay of “Co: C) Positron Emission of "F: D) Electron Capture of Kr: E)…

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Q: Which of the following describes the reaction: 214 Bi → He + 210 TI 83 81 positron emission beta…

A: Alpha decay : in which a nucleus emits an alpha particle ( or helium-4 nucleus) Beta decay:  in…

Q: C Bi undergoes four decay reactions: a, ß, B, a. Step 1. Bi undergoes a decay to give 10 TI Step 2.…

A:

Q: Positron emission by Co-55 produces an isotope with what atomic number?

A: We have Co-55 , we have to predict the atomic number ,after the positron emission .

Q: How many neutrons are emitted when a californium-249 nucleus (Z=98) is bombarded with a carbon-12…

A: In this question , we have given that californium is bombarded with a carbon - 12 nucleus which…

Q: Which of the following describes the reaction: Li + H + ¿Be+ ¿n O beta decay reaction O bombardment…

A: The reaction given is

Q: (a) Suppose 20 Ne is struck by an alpha particle, releasing a proton and a product nucleus in 10 the…

A: Nuclear chemistry is a branch of chemistry which deals with the reaction that is taking part in the…

Q: What is the radioactive particle released in the following nuclear equation? 90Sr38 90Y39 + The…

A: To solve this problem we have to know about the given nuclear equation .

Q: Boron is used in control rods in nuclear power reactors because it is a good neutron absorber. When…

A: Isotopes are atoms of same elements which have same atomic number but different mass number. In…

Q: Pb undergoes four decay reactions: B, a, B, B. Step 1. 214 Pb undergoes ß decay to give 1“Bi 82 Step…

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: 8. The formation of krypton from rubidium decay is a result of A) alpha emission B) beta emission C)…

A: As you have posted multiple questions in a single request, we will solve the first question for you.…

Q: The mass defect for a argon-36 nucleus is -0.329292 g/mol. Calculate the atomic mass (in u) of…

A: Here we have to determine the atomic mass of Ar-36 from the following given data , mass…

Q: Which of the statements are true of nuclear reactions? a. The number and types of atoms are the…

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: 2. If a nucleus captures an alpha particle and then emits a beta particle a. its atomic number…

A: general equation for α emission AZX→A-4Z-2Y +42He +Energy so due to alpha emission four units of…

Q: NUCLEAR CHEMISTRY: Consider the nuclei 1150 Sn. Determine its mass defect in kilograms if its atomic…

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Q: The formation of krypton from rubidum decay is a result of ______. A) alpha emission B) beta…

A: Alpha decay- It is type of radioactive decay in which an atomic nucleus releases an alpha particle…

Q: 311 Vo 121 For the fictitious element, vaccinium, the correct information is a) atomic mass = 121,…

A: Given : a fictitious element 311121V

Q: A beta particle is A. a helium nucleus emitted by a larger nucleus . B. a form of highly penetrating…

A:

Q: Natural uranium consists almost entirely of 238U. To operate a nuclear power reactor, the fuel must…

A: Isotopes are atoms of the element with same atomic number and different atomic masses. So in these…

Q: Which type of radioactive decay will decrease the atomic number by one and release two subatomic…

A: The property of a nucleus emitting α, β and γ rays is known as radioactivity and the substance…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.