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QUESTION A certain amount of a hypothetical monoatomic element X was put into a mass spectrometer. And it generates the mass spectrum as follows: 10 21 MASS, amu 23 Hint: Remember the masses at 21 and 23 are analogous to 18-yr old and 19-yr old (or 20-yr old) in Question #2. And the relative abundances at 10 and 20 are analogous to the number of students in each age group in Question #2. So apply the solution procedure of Question #2 to this question to find out the percentages of the first and the second sotopes. The two peak heights are the same. How many isotopes are present for this element X? The rough abundance of the first isotope in percentage is Relative Abundance 20

QUESTION A certain amount of a hypothetical monoatomic element X was put into a mass spectrometer. And it generates the mass spectrum as follows: 10 21 MASS, amu 23 Hint: Remember the masses at 21 and 23 are analogous to 18-yr old and 19-yr old (or 20-yr old) in Question #2. And the relative abundances at 10 and 20 are analogous to the number of students in each age group in Question #2. So apply the solution procedure of Question #2 to this question to find out the percentages of the first and the second sotopes. The two peak heights are the same. How many isotopes are present for this element X? The rough abundance of the first isotope in percentage is Relative Abundance 20

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter7: The Structure Of Atoms And Periodic Trends
Section: Chapter Questions
Problem 83SCQ: Slaters rules are a way to estimate the effective nuclear charge experienced by an electron. In this...
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DETECTION HOW TO FIND ISOTOPIC ABUNDANCE? An analyzer called a mass spectrometer is used. The sample is first vaporized and is then injected as a gas into an evacuated chamber, where it is bombarded with a beam of high-energy electrons by which the sample in gas particles become positively charged ions. Some of them fragment into smaller ions while others remain a bigger ions, surviving fragmentation. The various ions of different masses are then accelerated by an electric field and passed between the poles of a strong magnet, which deflects them through a curved, evacuated pipe. The lighter ions defected more strongly than heavier ones. By varying the strength of the magnetic field, it is possible to focus ions of different masses through a slit and onto a detector assembly. The mass spectrum that results is plotted as a graph of ion mass versus intensity- the higher the spectrum, the more abundant the ion of that mass. Faraday collectors Mass 46- -Mass 45- Mass 44- Magnet Amplifiers výý Raio output ION SOURCE Beam focussing lon accelerator Electron trap lon repeller Gas inflow (from behind) lonizing filament A Sketch of a Mass Spectrometer QUESTION A certain amount of a hypothetical monoatomic element X was put into a mass spectrometer. And it generates the mass spectrum as follows: 20 10 21 MASS, amu 23 Hint: Remember the masses at 21 and 23 are analogous to 18-yr old and 19-yr old (or 20-yr old) in Question #2. And the relative abundances at 10 and 20 are analogous to the number of students in each age group in Question #2. So apply the solution procedure of Question #2 to this question to find out the percentages of the first and the second isotopes. The two peak heights are the same. How many isotopes are present for this element X? The rough abundance of the first isotope in percentage is positive lon beam curent Relative Abundance
Transcribed Image Text:DETECTION HOW TO FIND ISOTOPIC ABUNDANCE? An analyzer called a mass spectrometer is used. The sample is first vaporized and is then injected as a gas into an evacuated chamber, where it is bombarded with a beam of high-energy electrons by which the sample in gas particles become positively charged ions. Some of them fragment into smaller ions while others remain a bigger ions, surviving fragmentation. The various ions of different masses are then accelerated by an electric field and passed between the poles of a strong magnet, which deflects them through a curved, evacuated pipe. The lighter ions defected more strongly than heavier ones. By varying the strength of the magnetic field, it is possible to focus ions of different masses through a slit and onto a detector assembly. The mass spectrum that results is plotted as a graph of ion mass versus intensity- the higher the spectrum, the more abundant the ion of that mass. Faraday collectors Mass 46- -Mass 45- Mass 44- Magnet Amplifiers výý Raio output ION SOURCE Beam focussing lon accelerator Electron trap lon repeller Gas inflow (from behind) lonizing filament A Sketch of a Mass Spectrometer QUESTION A certain amount of a hypothetical monoatomic element X was put into a mass spectrometer. And it generates the mass spectrum as follows: 20 10 21 MASS, amu 23 Hint: Remember the masses at 21 and 23 are analogous to 18-yr old and 19-yr old (or 20-yr old) in Question #2. And the relative abundances at 10 and 20 are analogous to the number of students in each age group in Question #2. So apply the solution procedure of Question #2 to this question to find out the percentages of the first and the second isotopes. The two peak heights are the same. How many isotopes are present for this element X? The rough abundance of the first isotope in percentage is positive lon beam curent Relative Abundance
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