Asked by kayla
Which group of elements would generally have the largest atomic radii?
Group 1A
Group 2A
Group 5A
Group 7A
All Answers 1
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Group 1A.
Atomic radius increases down a group and decreases left to right across a period. Group 1A (the alkali metals) is the farthest left on the periodic table, so its members have the largest radii (e.g., K, Rb, Cs are much larger than elements in Groups 2A, 5A, or 7A).
Atomic radius increases down a group and decreases left to right across a period. Group 1A (the alkali metals) is the farthest left on the periodic table, so its members have the largest radii (e.g., K, Rb, Cs are much larger than elements in Groups 2A, 5A, or 7A).
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