2. The isotope of iodine with a mass number 131 is often used in medicine as a radioactive tracer. Write the symbol for this isotope, indicating both mass number and atomic number. 3. Give the following number of protons, neutrons, and electrons in the following isotopes: a. Al-27 b. 28SI с. В-11

2. The isotope of iodine with a mass number 131 is often used in medicine as a radioactive tracer. Write the symbol for this isotope, indicating both mass number and atomic number. 3. Give the following number of protons, neutrons, and electrons in the following isotopes: a. Al-27 b. 28SI с. В-11

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter2: Atoms, Molecules, And Ions

Section: Chapter Questions

Problem 2.128QE

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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.

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2. The isotope of iodine with a mass number 131 is often used in medicine as a radioactive
tracer. Write the symbol for this isotope, indicating both mass number and atomic number.
3. Give the following number of protons, neutrons, and electrons in the following isotopes:
a. Al-27
b. 28Sİ
C. B-11

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