Uranium-238 has 92 protons and 146 neutrons. It undergoes radioactivedecay by emitting an alpha particle. What element is the product of thisdecay? *the element of neptunium, which has 93 protons and 144 neutronsan isotope of uranium having 92 protons and 144 neutrons.an ion of uranium having 92 protons and 91 electronsO the element thorium, which has 90 protons and 144 neutrons.

Given: U-238 under goes radioactive decay by emitting an alpha particle.

Answered: Uranium-238 has 92 protons and 146…

Living By Chemistry: First Edition Textbook

1st Edition

ISBN:9781559539418

Author:Angelica Stacy

Publisher:Angelica Stacy

ChapterU1: Alchemy: Matter, Atomic Structure, And Bonding

SectionU1.16: Old Gold: Formation Of Elements

Problem 6E

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2.86 For some uses, the relative abundance of isotopes must be manipulated. For example, a medical technique called boron neutron capture therapy needs a higher fraction of 10B than occurs naturally to achieve its best efficiency. What would happen to the atomic weight of a sample of boron that had been enriched in 10B? Explain your answer in terms of the concept of a weighted average.
2.19 Naturally occurring uranium consists of two isotopes, whose masses and abundances are shown below: Only 235U can be used as fuel in a nuclear reactor, so uramium for use in the nuclear industry must be enriched in this isotope. If a sample of enriched uranium has an atomic weight of 235.684 amu, what percentage of 235LT is present?
2.10 Which isotope in each pair contains more neutrons? (A) 35Cl or 33S, (b) 19F or 19Ne, (c) 63Cu or 65Zn, (d) 126I or 127Te
What is the nuclide symbol for the nucleus that contains 11 protons and 12 neutrons?
The isotope of plutonium used for nuclear fission is 239Pu . Determine (a) the ratio of the number of neutrons in a 239Pu nucleus to the number of protons, and (b) the number of electrons in a single plutonium atom.
Write the following isotopes in nuclide notation (E.g., " C614 ")? (a) oxygen-14. (b) copper-70. (c) tantalum-175. (d) francium-217
For the following isotopes that have missing information, fill in the missing information to complete the notation (a) X1434 (b) PX36 (c) MX57n (d) X56121
Who discovered the nucleus? Describe the experiment that led to this discovery.
An average atomic nucleus has a diameter of about m.
It is good practice to actively read the textbook and to try to verify claims that are made when you can. The following claim is made in your textbook: “. . . if the nucleus were the size of a grape, the electrons would be about 1 mile away on average.” Provide mathematical support for this statement.
Fill in the following table:
The following isotopes are important in nuclear power. Write their symbols in the form XZA. a. U-235 b. U-238 c. Pu-239 d. Xe-144

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