Chemistry (4th Edition)

Published by McGraw-Hill Publishing Company
ISBN 10: 0078021529
ISBN 13: 978-0-07802-152-7

Chapter 2 - Questions and Problems: 2.20

Answer

A= 54

Work Step by Step

Mass number (A) = Atomic Number(Z) + number of neutrons (n) n=28, Z= 26 (Given that atom is Fe). A =26+28 = 54.
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