The process that breaks down rock through chemical changes is

Erosion or Weathering. Probably erosion.

The process that breaks down rock through chemical changes. Weathering in which solid rock is fragmented by mechanical processes that do not change its chemical composition. Process that splits rock when water seeps into cracks, then freezes and expands. Weathering is the force that breaks down rocks.

l dont know l am s sorry

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.