Periodic Table and Periodicity - Advanced Concepts
Q. What trend is observed in atomic radius across a period in the periodic table?
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A.
Increases
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B.
Decreases
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C.
Remains constant
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D.
Varies randomly
Solution
Atomic radius decreases across a period due to increasing nuclear charge attracting electrons closer.
Correct Answer: B — Decreases
Q. Which of the following elements has the largest atomic radius?
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A.
Lithium
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B.
Sodium
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C.
Potassium
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D.
Rubidium
Solution
Rubidium has the largest atomic radius due to its position in Group 1 and being the lowest in the group.
Correct Answer: D — Rubidium
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