Answer
A
Work Step by Step
The number of valence electrons for an atom is determined by referring its group number. Arsenic is located in Group 5A, so it has five valence electrons. So (a) is the correct answer.
Chemistry (12th Edition)
by Wilbraham
Published by
Prentice Hall
ISBN 10:
0132525763
ISBN 13:
978-0-13252-576-3
Chapter 7 - Ionic and Metallic Bonding - Standardized Test Prep - Page 219: 7
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