Why do chemically active metals have low electronegativity values?

Active metals are those metals in the group 1 of the periodic table.

Electronegativity is the trend to atract electrons.

Active metals have few valence electron, because their last shell is of the kind ns^1 or ns^2

Then, these atoms do not trend to attract electrons. The most electronegative atomos are those who have 7 valence elecfrons; this is their last shell is of the kind ns^7, because when they attract one electron to its valence shell they will complete 8 electrons which is the most stable configuration.

That result from subduction of oceanic plates beneath lighter continental plates. most of the earth's volcanoes are located around the pacific ring of fire because that the location of most of the earth's subduction zones.