Hypochlorite, polyatomic ion has the lowest charge when compared with other given options.
Answer: hypochlorite
Explanation:
Ions that possess more than single atom is always referred as polyatomic or molecular ions. It is the charged chemical compound consisting more than one covalently bonded atoms or metal complex that can be taken as the single unit.
is the charge for Hypochlorite and it is the polyatomic ion with the lowest charge.