Question

Explain the variation in atomic radii on moving from top to bottom in a group.
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Answer 1

Answer:

Group Trend

The atomic radius of atoms generally increases from top to bottom within a group. As the atomic number increases down a group, there is again an increase in the positive nuclear charge. ... As the atomic number increases within a period, the atomic radius decreases.

Answer 2

Answer:

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Explanation:

The atomic radius of atoms generally increases from top to bottom within a group. As the atomic number increases down a group, there is again an increase in the positive nuclear charge. ... As the atomic number increases within a period, the atomic radius decreases.