Question

exam 2: periodicity & electron configuration/em spectrum
the most reactive group of metals is group and the most reactive group of nonmetals is group

Explanation:

In the periodic table, alkali metals in group 1 are highly reactive metals as they have one valence - electron which is easily lost. Halogens in group 17 are the most reactive non - metals as they need one electron to achieve a stable octet.

Answer:

The most reactive group of metals is group 1 and the most reactive group of nonmetals is group 17.