In a salt what charge does the halogen element have when it gains an electron?

In a salt halogen element have negative charge if it gain an electron.

Explanation:

Fluorine, chlorine, bromine and iodine belongs to the family of halogen elements. These elements have high tendency to acquire electron due their high electronegativity.

When a halogen element forms a salt for example potassium chloride (KCl), the Cl or chlorine is a halogen element which get negative charge when it gains or acquires an electron.