Answered: 2.25 Write the appropriate symbol for…

2.25 Write the appropriate symbol for each of the following isotopes: (a) Z = 74, A = 186; (b) Z = 80, A = 201; (c) Z = 34, A = 76; (d) Z= 94, A = 239.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Isotopes are different types of atoms of the same chemical element, each having the same number of protons and electrons but a different number of neutrons. The atomic number of an element, denoted by the symbol Z, is equal to the number of protons. The mass number of the element, denoted by the symbol A, is the sum of the number of protons and the number of neutrons. Therefore, isotopes of the same element have the same atomic number (Z), but their mass numbers (A) are different. For example, carbon has three isotopes, carbon-12, carbon-13, and carbon-14, with mass numbers 12, 13, and 14, respectively. All three isotopes have the same atomic number (Z = 6) but different mass numbers. The isotopes can be represented by using symbolic notation. In symbolic notation, the mass number is written as a left superscript and the atomic number is written as a left subscript to the chemical symbol of the element: tab Os lock Part A Atomic number 14 The isotopes of carbon with mass numbers 12,…
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