Question

Atomic radius increases down the group - explain
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Answer 1

Answer:

The number of energy levels increases as you move down a group as the number of electrons increases. Each subsequent energy level is further from the nucleus than the last. Therefore, the atomic radius increases as the group and energy levels increase. 2) As you move across a period, atomic radius decreases.

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Answer 2

Answer:

As we go down a group, the size of atoms or their atomic no. increases rapidly. Thus, the attractive force of the nucleus on the outermost electron starts to decrease. Hence, the size increases.

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