Organic Chemistry (8th Edition)

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

Chapter 1 - Introduction and Review - Problems - Page 8: Problem 1-2 i

Answer

There are three H attached to one Boron.

Work Step by Step

Boron has three electrons around it so those three are shared by the three H. Boron has a incomplete octet. This is an exceptional case of octet rule.
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