General Chemistry 10th Edition

Published by Cengage Learning
ISBN 10: 1-28505-137-8
ISBN 13: 978-1-28505-137-6

Chapter 9 - Ionic and Covalent Bonding - Questions and Problems - Page 374: 9.20

Answer

d. 1s2, 2s2, 2p5

Work Step by Step

Generally carbon has 6 electrons in its ground state C3- means the carbon has gained 3 electrons thus now it has a total of 9 electrons giving it its new electronic configuration. as 2+2+5=9 and s subshells can only hold 2 electrons and p subshells can only hold a maximum of 6 electrons.
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