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Atomic size increases down a group as the energy level (or shell) increases. So Astatine will have the largest size (radius) in group 17

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5mo ago

Iodine has the largest atomic radius in Group 17. This is because atomic radius tends to increase down a group on the Periodic Table, with iodine being located at the bottom of Group 17.

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Q: Which element in group 17 has the largest radius?
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Which element has the largest radius in the halogen family?

Astatine has the largest atomic radius in the halogen family.


What group does element 17 belong too?

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The element in Group 17 of Period 3 is chlorine. It is a nonmetal halogen with the atomic number 17.


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The group element is chlorine (Cl), which has an electron configuration of 1s2 2s2 2p6 3s2 3p5. Chlorine is located in Group 17 of the periodic table, also known as the halogens group.


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