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as you move down a group in the periodic table, atomic size generally a. increases. b. decreases. c. remains the same. d. varies randomly.

User Annie C
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increases is the answer

User Anodyne
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The atomic size / radius generally increases, as when we move down the group, it means that there is an additional shell compared to the last element. For example, K has one more electron shell than Na does, so the atomic size generally increases as we move down a group in the periodic table.
User Vadchen
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