Answered: (311) (440) (220) (511) (400) (422) 10…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Out of the following defects, which one must occur in pairs for ionic compounds with 1:1 stoichiometries?

Group of answer choices

A:Schottky

B:Substitution

C:Frenkel

D:Interstitial

Consider this x-ray diffraction pattern for the mineral magnetite (Fe₃O₄) and Bragg's Law. Which of the following statements is true? (HINTs: Since all of these peaks result from the same x-ray scan, the same x-ray wavelength applies to all peaks in this pattern. You may also assume that the same order (n) applies to all peaks in this pattern.)

Group of answer choices

The atom plane spacing (d) that gives the (220) peak is smaller than that which gives the (400) peak.

If this sample was scanned with an x-ray beam of shorter wavelength, the peaks would be in a different order.

The labeled peak that represents the largest atom plane spacing (d) is the (440) one.

The atom plane spacing (d) that gives the (400) peak is larger than that which gives the (511) peak.

(311)
(440)
(220)
(511)
(400)
(422)
10
20
30
50
60
70
40
2-theta (deg.)
FIGURE I: The XRD patterns of magnetite Fe, O,.
Intensity

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