Arrow Electron Flow Ex from Course Reader

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Alexis Kupka 1H
Posts: 21
Joined: Fri Sep 25, 2015 3:00 am

Arrow Electron Flow Ex from Course Reader

Postby Alexis Kupka 1H » Sat Feb 20, 2016 11:58 pm

In the course reader example with CH3CH=CHCH3 and H-Br, why does the arrow flow show two electrons moving to the H? How can you tell how many electrons are being transferred?

Andre Tsivis 1K
Posts: 16
Joined: Fri Sep 25, 2015 3:00 am

Re: Arrow Electron Flow Ex from Course Reader

Postby Andre Tsivis 1K » Sun Feb 21, 2016 2:13 am

2 electrons are being transferred if there is a double-headed arrow, and only one electron is being transferred if there is a single-headed arrow (pg. 86 course reader).

Andre Tsivis 1K
Posts: 16
Joined: Fri Sep 25, 2015 3:00 am

Re: Arrow Electron Flow Ex from Course Reader

Postby Andre Tsivis 1K » Sun Feb 21, 2016 2:55 am

I am also assuming that when a BOND is broken, 2 e- will be transferred and when there is just a single dot drawn in the Lewis structure then only that one e- will be transferred.


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