Chemistry (12th Edition)

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

Chapter 9 - Chemical Names and Formulas - 9 Assessment: 58

Answer

Sr is in Group IIA meaning it has 2 valence electrons. It will most likely lose these 2 valence electrons so the preceding shell is a full octet, leaving a charge of 2+. Ca is in Group IIA meaning it has 2 valence electrons. It will most likely lose these 2 valence electrons so the preceding shell is a full octet, leaving a charge of 2+. Al is in Group IIIA meaning it has 3 valence electrons. It will most likely lose these 3 valence electrons so the preceding shell is a full octet, leaving a charge of 3+. Cs is in Group IA meaning it has 1 valence electrons. It will most likely lose this 1 valence electrons so the preceding shell is a full octet, leaving a charge of 1+

Work Step by Step

Sr is in Group IIA meaning it has 2 valence electrons. It will most likely lose these 2 valence electrons so the preceding shell is a full octet, leaving a charge of 2+. Ca is in Group IIA meaning it has 2 valence electrons. It will most likely lose these 2 valence electrons so the preceding shell is a full octet, leaving a charge of 2+. Al is in Group IIIA meaning it has 3 valence electrons. It will most likely lose these 3 valence electrons so the preceding shell is a full octet, leaving a charge of 3+. Cs is in Group IA meaning it has 1 valence electrons. It will most likely lose this 1 valence electrons so the preceding shell is a full octet, leaving a charge of 1+
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