Iodine has more radius. It has least attraction for electron.
This halogen is astatine.
Halogen family members, or elements in group 17, have 7 valence electrons.
When a halogen reacts with a metal, an ionic compound called a metal halide is formed. The metal donates its electrons to the halogen, resulting in the formation of a stable compound. This reaction usually involves the transfer of electrons from the metal to the halogen.
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Astatine is the least reactive halogen because it has the largest atomic size among the halogens, with electrons in its outer shell being held less tightly due to increased shielding effects. This makes it less likely to participate in chemical reactions compared to the other halogens.
Halogens are group 17 elements. They have 7 valence electrons.
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NOTHING
There is no halogen that will become anionic. All of the valence electrons in halogens are filled, thus halogens will not react with any other compound or element. Bromine is an element that will form and anion with 36 electrons.
halogen
halogen
halogen NOTE added by Dr.J.): A halogen doesn't have a few valence electrons. They have 7 valence electrons.