In 1913, an element was known to “emanate” from radium-226 by alpha emission and then to decay to polonium-218 by alpha emission. What was the unknown element? a. radon-222 d. bismuth-214 b. lead-214 e. lead-218 c. plutonium-238
In 1913, an element was known to “emanate” from radium-226 by alpha emission and then to decay to polonium-218 by alpha emission. What was the unknown element? a. radon-222 d. bismuth-214 b. lead-214 e. lead-218 c. plutonium-238
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter21: Nuclear Chemistry
Section: Chapter Questions
Problem 59E: Based on what is known about Radon-222’s primary decay method, why is inhalation so dangerous?
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Question
In 1913, an element was known to “emanate” from radium-226 by alpha emission and then to decay
to polonium-218 by alpha emission. What was the unknown element?
a. radon-222 d. bismuth-214
b. lead-214 e. lead-218
c. plutonium-238
Expert Solution
Step 1
The symbol of an alpha particle is 2He4.
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