Download Chemistry: A Guided Inquiry by Richard S. Moog, John J. Farrell PDF

By Richard S. Moog, John J. Farrell

The ChemActivities present in Chemistry: A Guided Inquiry, Fourth variation use the school room guided inquiry technique and supply a superb accompaniment to Spencer's Chemistry: constitution and Dynamics, Fourth variation or the other basic Chemistry textual content. Designed to aid procedure orientated Guided Inquiry studying (POGIL), those fabrics offer numerous how you can advertise a student-focused, lively school room that diversity from cooperative studying to lively pupil participation in a extra conventional atmosphere. they're designed to coach scholars to exploit and research information, figures, and textual content to infer chemical recommendations

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54 ChemActivity 9 The Shell Model (III) Model 2. Energy Level Diagrams for Helium, Neon, and Argon. 0 Energy levels are not to scale. Energies are given in MJ/mole. Critical Thinking Questions 6. Based on the energy level diagram in Model 2, sketch a photoelectron spectrum for Ar. Make sure to indicate the relative intensities and positions of all peaks. ChemActivity 9 The Shell Model (III) 55 Exercises 1. a) Based on our revised shell model, how many peaks would be expected in a photoelectron spectrum of lithium?

Critical Thinking Questions 14. " Why is the distance of the shell from the nucleus important in determining the corresponding peak position in the photoelectron spectrum? 15. Why is it expected that 2/10 of the ejected electrons will come from the n = 1 shell, and 8/10 of the electrons from the n = 2 shell? ChemActivity 8 Photoelectron Spectroscopy 16. 51 Make a sketch of the predicted photoelectron spectrum of Ne based on the description given above. Indicate the relative intensity (peak size) and positions of the two peaks.

Explain your reasoning clearly. ) ChemActivity 9 The Shell Model (III) 53 Information: The Neon Atom Revisited. Contrary to our predictions, there are three peaks in the spectrum, not two! It appears that we must now modify our model to remain consistent with these new experimental results. 0 MJ/mole. 0 MJ/mole. Thus, the other two peaks must both arise from electrons in the n = 2 shell. 08 MJ/mole. In other words, there are two different energy levels associated with the n = 2 shell. 68 MJ/mole).

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