w.phpTid-556633 2016, Prof. Calvo Question 20 of 25 (1 point) Chemistry of \"Pho

Question

w.phpTid-556633 2016, Prof. Calvo Question 20 of 25 (1 point) Chemistry of "Photogray Glasses "Photogray lenses for eyoglasses darkon in bright sunshine because the lenses contain tiny, transparent AgCI crystais. Exposure to light removes electrons from Cr ions forming a chlorine alom in an excited state (indicated below by the asteriskj The electrons are transferred to Ag ions, forming silver metat Silver metal is reflective, giving rise to the photo-gray color a) wite electron configurations for Cr, Q. Ag'. and Ag. CI- cr“ O Hint Ext Acvity Progress: 1112131415161718 1920 ) Activity Grade: 25 Points Possible Started: Thursday, Apri 21, 2016. 09:31 AM

Explanation / Answer

a)

Cl configuration = 1s2 2s2 2p6 3s2 3p5

Cl- configuration = 1s2 2s2 2p6 3s2 3p6

Ag configuration = 1s22s22p63s23p63d104s24p64d105s1

Ag+ configuration = 1s22s22p63s23p63d104s24p64d10

b)

option C ) is correct answer

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