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Ignore the answer I have selected but please help!! Ty in advance, also please explain

Ignore the answer I have selected but please help Ty in advance also please explain class=

Respuesta :

Answer:

Iodine is most reactive because it is very close to having a "full shell" which is 8 electrons so they are "eager" to gain the last electron to became balanced, so that makes it the most reactive. Hope that helps:)

Explanation: