What is the function of protons, neutrons, and electrons?

Explanation:

Protons help bind the nucleus together. They also attract the negatively charged electrons, and keep them in orbit around the nucleus.

Electrons create a negative charge that balances the positive charge of the protons in the atomic nucleus.

Netrons are responsible for combining with protons in the nucleus together to be held by the strong force.

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.