When K3PO4 is mixed with water, it does dissolve. a) How many potassium ions will form?
b) What is the charge on a potassium ion?
c) How many phosphate ions will form?
d) What is the charge of a phosphate ion?

thats how its supposed to be

explanation:

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.