Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 4 - Atomic Structure - 4.3 Distinguishing Among Atoms - Sample Problem 4.4 - Page 118: 22

Answer

Boron-11 is more abundant.

Work Step by Step

The correct atomic mass of boron is 10.81 amu. The isotope Boron-11 has a atomic mass of 11 amu which is very close to the correct atomic mass of boron thus it is more abundant in the atmosphere.
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