Chemical Principles
Chemical Principles
8th Edition
ISBN: 9781337247269
Author: Steven S. Zumdahl; Donald J. DeCoste
Publisher: Cengage Learning US
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Chapter 20, Problem 22E
Interpretation Introduction

Interpretation: The time needed to reduce the amount of 131I to 1/100 of the original amount is to be calculated, ifthyroid patient takes a sample of Na 131Icontaining 10.µg of 131I .

Concept Introduction:The probability of decay per unit time of radioactive nuclei is called Decay constant. The decay constant is related to the half-life of the nuclide T 1/2 by the following relation:

   T 1/2 = ln 2/λ

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Chemical Principles

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