What is the formula of the ionic compound formed from sodium and chlorine?

I can give you a example like for example, in the reaction of calcium and chlorine, the compound is called calcium chloride. It is composed of Ca 2+ cations and Cl - anions; those ions are stable since they have filled valence shells. Its ionic formula is written as CaCl 2, the neutral combination of these ions

Its strengthits conductivity of heat and electricity its shiny colourmalleable and ductility

Well you can immediately rule out a and d because if a metal were to lose or gain protons, then it would become a different element all together. the answer here is b because the positive symbol with a number refers to how many electrons the metal can give away to become stable.