Isotopes such as 26Al (half-life: 7.2 × 105 years) are believed to have been present in our solar system as it formed, but have since decayed and are now called extinct nuclides.(a) 26Al decays by β+ emission or electron capture. Write the equations for these two nuclear transformations.(b) The earth was formed about 4.7 × 109 (4.7 billion) years ago. How old was the earth when 99.999999% of the 26Al originally present had decayed?
Isotopes such as 26Al (half-life: 7.2 × 105 years) are believed to have been present in our solar system as it formed, but have since decayed and are now called extinct nuclides.(a) 26Al decays by β+ emission or electron capture. Write the equations for these two nuclear transformations.(b) The earth was formed about 4.7 × 109 (4.7 billion) years ago. How old was the earth when 99.999999% of the 26Al originally present had decayed?
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter20: Nuclear Chemistry
Section: Chapter Questions
Problem 20.114QP
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Isotopes such as 26Al (half-life: 7.2 × 105 years) are believed to have been present in our solar system as it formed, but have since decayed and are now called extinct nuclides.
(a) 26Al decays by β+ emission or electron capture. Write the equations for these two nuclear transformations.
(b) The earth was formed about 4.7 × 109 (4.7 billion) years ago. How old was the earth when 99.999999% of the 26Al originally present had decayed?
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