The stability of any nucleus is determined by the difference between the repulsion and the short- range attraction. The nucleus disintegrates if repulsion prevails. The stable nuclei of the heavier elements contain approximately equal number of neutrons and protons. Nuclei with even numbers of both protons and neutrons are generally more stable than those with odd numbers of these particles. All isotopes of the elements with atomic numbers higher than 83 are not radioactive.

Q: understanding

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Q: Why are some atoms radioactive?

A: The radioactive nuclei are unstable and have an excess number of either protons or neutrons in the…

Q: Which pair of symbols represents nuclei with the same number of neutrons? 56Co and 5Co 5' Fe and 5Ni…

A: An element is composed of mainly three constituents i.e. neutrons, protons, and electrons. Out of…

Q: Given the following diagram, indicate the nucleus using atomic notation. Express your answer as a…

A: The given element contains: Neutrons, n = 30 Protons, p+ = 25 Electrons, e- = 25 Since the element…

Q: Which element has the most tightly bound nucleus? is the correct answer. (No nuclear reactions can…

A: The most tightly bound nucleus can be observed from Nuclear Binding Energy curve. The curve predicts…

Q: Alpha ... s Beta .... Gemma .... . Aluminum Teed Lead Which of the following BEST describes Gamma…

A: The correct option is (a): An atom shoots off a photon to release energy and stabilize it's nucleus.

Q: Alpha decay alters the atomic number of the parent element. O True O False

A: Correct Ans - TRUE

Q: What is another method to track the extent of isotopic decay.

A: Given: Extent of isotopic decay To find: Method that is used to track isotopic decay.  Solution:…

Q: Alpha I'n froe! Decay withing During Alpha decay what is happening to the nucleus in order to try…

A: In alpha decay, the atomic nucleus shoots an alpha particle and changes into a new nucleus. The…

Q: What's ir

A: Nucleus contains two particles-1. protons and 2. neutrons.

Q: 2. Use the following isotopes to answer the following 17 F, 135 Cs, 55 214 Po 84 write the nuclear…

A: Nuclear decay reaction: Also called as, Radioactive decay. It is reaction in which Radioactive…

Q: Which two particles have opposite charges but the same mass? neutrons and protons alpha (a) and beta…

A: Charge on neutron = 0 Charge on proton = positiveMass of neutron is nearly equal to mass of…

Q: Indicate the number of: protons neutrons and electrons for 204pb nuclide.

A: Here we have to find the number of protons, neutrons and elctrons present in 204Pb nuclide isotope.…

Q: The radioactive element francium undergoes a series of nuclear decays, eventually forming a stable…

A: Alpha DecayXZA - H24e  → YZ-2A-4          ↓         ∝Beta decaye.g C614   - e-10    → N714

Q: 2. Using your knowledge of nuclear physics, write the equation for the following processes: a) The…

A:

Q: An positively charged particle with the same mass as an electron emitted as nuclear radiation is…

A: we need to tell which particle is positively charged and has mass equal to mass of electron

Q: Based on the evidence shown, what is the atomic number of thorium? A B CO U Parent nucleus…

A:

Q: Which particle, if lost from the nucleus, will not result in a change in the atomic mass number?

A: Which particle, if lost from the nucleus, will not result in a change in the atomic mass number?

Q: Factors determining nuclear stability Answer Bank physical state of the element pressure on the…

A: Answer given as follows

Q: If the density of lead is 11.34 g / a.m., how many atoms are there in a piece of lead 2.5 cm wide,…

A: To calculate the number of atoms in the sample, we must have the number of moles of the substance.…

Q: Discuss the idea of radioactive neutron source giving some examples.

A: answer- Neutrons may be emitted from nuclear fusion or nuclear fission, or from other nuclear…

Q: What is the charge of the nucleus of element 89?

A: The number of protons corresponds to the charge of the nucleus since Neutrons have no net charge, it…

Q: Describe how variations in an atomic nucleus accountfor its physical properties

A: A physical property is any property that is measurable, whose value describes a state of a physical…

Q: . Explain the beta decay process and stability in terms of mass parabola for both odd and even ss…

A: Beta decay is a nuclear process that occurs when the nucleus of an atom transforms into a more…

Q: Discuss how radioactive atoms gain stability.

A: Radioactivity is the phenomenon by which a radioactive substance undergoes a decay process by…

Q: 83Sr is a radioactive isotope. What is the most likely mode of radioactive decay for83Sr? and why

A: A question based on nuclear reactions. A radioisotope is prescribed for which the most likely mode…

Q: which extra particle is an isotope cause it to be unstable

A:

Q: A nucleus decays by emitting a beta particle. Which is the parent nucleus for the product nucleus…

A:

Q: What is the nuclear symbol for a proton

A: In the nuclear notation for the element, it is given as:         X: Element Z: Atomic Number =…

Q: Which isotopes are unstable with respect to  Nuclear Fission and Nuclear Fusion?

A: Given The following  isotopes are unstable with respect to  Nuclear Fission and Nuclear Fusion?…

Q: Q9. 6628Ni (mass = 65.9291 amu) undergoes beta decay and from 6629Cu (mass 65.9289 amu). a)…

A: The detailed explanation of this question is given below

Q: Select all that apply. For each pair of isotopes listed, predict which one is less stable. (a) “Li…

A: The stability of isotopes can be calculated as follows

Q: 2. In each pair of isotopes, indicate which one you would expect to be radioactive. Support your…

A: a. 42Mo95 : No. of protons = 42(even). No. of neutrons = 95-42 = 53(odd).  43Tc92 : No. of protons =…

Q: how are the numbers of neutrons and protons in a nucleus related to it’s stability?

A: Number of neutrons and protons are an effective means of predicting nuclear stability. This ratio is…

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.