28. An air conditioner lowers the temperature of the surrounding air. Water condensed
from the air is most likely to run out of
the bottom water hose of an automobile
air conditioner when the air entering the
air conditioner
?
(1) contains dust and pollen
(2) is cold and dry
(3) is cold and humid
(4). is warm and dry
(5) is warm and humid

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.