The rate constant for the decay of unstable nuclide X by alpha-particle emission is 1.17x10 /day. What is the identity of X? Hint: There are 365 days in a year. A) Uranium-238 Nuclide Half-Life B) Uranium-234 Uranium-238 4.51 x 10° years Uranium-234 2.48 x 10° years 10 1.62 x 10° years 20.4 years C) Thorium-230 Thorium-230 8.00 x years Radium-226 D) Radium-226 Lead-210 E) Lead-210

Chemistry: Principles and Reactions
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Author:William L. Masterton, Cecile N. Hurley
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Chapter18: Nuclear Reactions
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Question 23 of 30
The rate constant for the decay of unstable nuclide X by alpha-particle emission is
1.17x10 /day. What is the identity of X? Hint: There are 365 days in a year.
A) Uranium-238
Nuclide
Half-Life
B) Uranium-234
Uranium-238 4.51 x 10° years
Uranium-234 2.48 x 10° years
Thorium-230 8.00 x 10" years
C) Thorium-230
1.62 x 10° years
20.4 years
Radium-226
D) Radium-226
Lead-210
E) Lead-210
Transcribed Image Text:Question 23 of 30 The rate constant for the decay of unstable nuclide X by alpha-particle emission is 1.17x10 /day. What is the identity of X? Hint: There are 365 days in a year. A) Uranium-238 Nuclide Half-Life B) Uranium-234 Uranium-238 4.51 x 10° years Uranium-234 2.48 x 10° years Thorium-230 8.00 x 10" years C) Thorium-230 1.62 x 10° years 20.4 years Radium-226 D) Radium-226 Lead-210 E) Lead-210
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