Answer
(c) 0.363
Work Step by Step
Decay constant=$\frac{\ln 2}{t_{1/2}}=\frac{0.693}{1.91\,y}=0.363\,y^{-1}$
The numerical value of the decay constant is 0.363
General Chemistry: Principles and Modern Applications (10th Edition)
by Petrucci, Ralph H.; Herring, F. Geoffrey; Madura, Jeffry D.; Bissonnette, Carey
Published by
Pearson Prentice Hal
ISBN 10:
0132064529
ISBN 13:
978-0-13206-452-1
Chapter 25 - Nuclear Chemistry - Exercises - Self-Assessment Exercises - Page 1146: 90
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