Answered: Nuclei differ in their stability, and…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter4: Chemical Foundations: Elements, Atoms, And Ions

Section: Chapter Questions

Problem 95AP: Though the common isotope of aluminum has a mass number of 27, isotopes of aluminum have been...

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Nuclei differ in their stability, and some are so unstable thatthey undergo radioactive decay. The ratio of the number of neutrons to number of protons (N/Z) in a nucleus correlateswith its stability. Calculate the N/Zratio for (a) ¹⁴⁴Sm; (b) ⁵⁶Fe;(c) ²⁰Ne; (d) ¹⁰⁷Ag. (e) The radioactive isotope ²³⁸U decays ina series of nuclear reactions that includes another uranium isotope,²³⁴U, and three lead isotopes, ²¹⁴Pb, ²¹⁰Pb, and ²⁰⁶Pb. How manyneutrons, protons, and electrons are in each of these five isotopes?

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