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OpenStudy (13ziar):

Please Help!!! Explain why the reactivity of the alkali metals increases as you go down group 1 but the reactivity of the halogens decreases as you go down group 7.

OpenStudy (13ziar):

@jabez177 @imqwerty

OpenStudy (13ziar):

@Frostbite

OpenStudy (13ziar):

@jagr2713

OpenStudy (13ziar):

please help me

OpenStudy (13ziar):

@zaynab123

OpenStudy (andrew_kozak5933):

I believe it has something to do with the number of valence electrons. I would start there.

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