What family is the most reactive metals in the periodic table?
The most reactive metals in the periodic tables are the alkali metals, followed by the alkaline earth metals.
Because of the alkali metals' electron configuration (wants to give its one electron to another substance), they're highly reactive. For example, any of the alkalis and fluorine, which is very electronegative and wants 1 more electron, would be very dangerous because it would complete its octet.
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