Organic Chemistry (8th Edition)

Published by Pearson
ISBN 10: 0321768418
ISBN 13: 978-0-32176-841-4

Chapter 1 - Introduction and Review - Study Problems - Page 38: 1-40 a

Answer

The one on the left is the minor contributor and the one on the right is the major contributor.

Work Step by Step

The one on the right is the major contributor because the negative charge is on the electronegative atom. There is no other resonance form.
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