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Chapter 3-Bonding-Review Questions

Chapter 3-Bonding-Review Questions

Postby Lavi » Wed May 25, 2016 10:07 pm

I'm a bit confused about working out the number of lone pairs from the structure provided in Q5 from the chapter review question-

5) For the incomplete Lewis structure drawn, how many lone pairs of electrons are present in the following molecule?

http://www.oatbooks.com/images/index_c72.png

A) 0
B) 1
C) 2
D) 3
E) 4

I keep seeing 3 rather than 4
Lavi
 
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Re: Chapter 3-Bonding-Review Questions

Postby goldstanda3269 » Wed Jul 13, 2016 3:13 am

Lavi wrote:I'm a bit confused about working out the number of lone pairs from the structure provided in Q5 from the chapter review question-

...

I keep seeing 3 rather than 4


There are 2 resonance structures shown in the Explanation. The first structure resembles the question with only one bond to oxygen and then you can count 3 lone pairs on oxygen and one lone pair on sulfur (needed to complete the octet).
goldstanda3269
 
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