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Mercury(II) sulfide (HgS) exists in two different crystalline forms. In cinnabar, the band gap is 3.2 × 10¬19 J; in meta- cinnabar, it is 2.6 × 10-19 J. In some old paintings with improperly formulated paints, the pigment vermilion (cin- nabar) has transformed to metacinnabar on exposure to light. Describe the color change that results.

Mercury(II) sulfide (HgS) exists in two different crystalline forms. In cinnabar, the band gap is 3.2 × 10¬19 J; in meta- cinnabar, it is 2.6 × 10-19 J. In some old paintings with improperly formulated paints, the pigment vermilion (cin- nabar) has transformed to metacinnabar on exposure to light. Describe the color change that results.

Chemistry
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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Mercury(II) sulfide (HgS) exists in two different crystalline forms. In cinnabar, the band gap is 3.2 × 10¬19 J; in meta- cinnabar, it is 2.6 × 10-19 J. In some old paintings with improperly formulated paints, the pigment vermilion (cin- nabar) has transformed to metacinnabar on exposure to light. Describe the color change that results.
Transcribed Image Text:Mercury(II) sulfide (HgS) exists in two different crystalline forms. In cinnabar, the band gap is 3.2 × 10¬19 J; in meta- cinnabar, it is 2.6 × 10-19 J. In some old paintings with improperly formulated paints, the pigment vermilion (cin- nabar) has transformed to metacinnabar on exposure to light. Describe the color change that results.
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