Chemistry (12th Edition)

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

Chapter 6 - The Periodic Table - 6 Assessment: 36

Answer

a. Sodium b. Strontium c. Germanium d. Selenium

Work Step by Step

a. Atomic radius increases when moving down a group so since sodium is farther down then lithium in Group 1A on the periodic table it has a larger atomic radius b. Atomic radius increases when moving down a group so since strontium is farther down then magnesium in Group 2A it has a larger atomic radius c. Atomic radius increases when moving down a group so since germanium is farther down then carbon in Group 4A it has a larger atomic radius d. Atomic radius increases when moving down a group so since selenium is farther down then oxygen in Group 6A it has a larger atomic radius
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