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Science Chemistry Chemistry: An Atoms-Focused Approach

If either or both of I 33 137 t o X e 54 137 t o C s 55 137 decay processes involve emission of a β particle. Solution: Both of the decay processes involve β (electron) emission. Explanation: Iodine has only one naturally occurring stable isotope with a mass number of 127. This means I 53 137 is a neutron-rich isotope. The high neutron to proton ratio means it must undergo β decay. I 53 137 → X e 54 137 + β - 1 0 The heaviest stable isotope of Xenon has a mass number of 132. That means the X e 54 137 nuclide formed in the reaction above is also a neutron rich nuclide making it unstable. To increase its stability, X e 54 137 must also undergo β decay to decrease the neutron to proton ratio. X e 54 137 → C s + β - 1 0 55 137 Therefore, both the decays involve emission of a β particle (β - or electron). Conclusion: A neutron rich isotope tries to achieve stability by undergoing β decay thereby reducing the neutron to proton ratio.

If either or both of I 33 137 t o X e 54 137 t o C s 55 137 decay processes involve emission of a β particle. Solution: Both of the decay processes involve β (electron) emission. Explanation: Iodine has only one naturally occurring stable isotope with a mass number of 127. This means I 53 137 is a neutron-rich isotope. The high neutron to proton ratio means it must undergo β decay. I 53 137 → X e 54 137 + β - 1 0 The heaviest stable isotope of Xenon has a mass number of 132. That means the X e 54 137 nuclide formed in the reaction above is also a neutron rich nuclide making it unstable. To increase its stability, X e 54 137 must also undergo β decay to decrease the neutron to proton ratio. X e 54 137 → C s + β - 1 0 55 137 Therefore, both the decays involve emission of a β particle (β - or electron). Conclusion: A neutron rich isotope tries to achieve stability by undergoing β decay thereby reducing the neutron to proton ratio.

Solution Summary: The author explains that Iodine has only one naturally occurring stable isotope with a mass number of 127.

Chemistry: An Atoms-Focused Approach

Chemistry: An Atoms-Focused Approach

14th Edition

ISBN: 9780393912340

Author: Thomas R. Gilbert, Rein V. Kirss, Natalie Foster

Publisher: W. W. Norton & Company

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.

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Chemistry: An Atoms-Focused Approach

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