Identify the metal and its possible oxidation states. Here, the metal is tin (Sn), which commonly exhibits +2 and +4 oxidation states.
Determine the oxidation state of tin in the compound SnCl_2. Since chlorine (Cl) typically has a -1 charge, and there are two chlorine atoms, the total negative charge is -2.
Set up the equation for the overall charge balance: Let the oxidation state of tin be x. Then, x + 2(-1) = 0, which simplifies to x - 2 = 0.
Solve for x to find the oxidation state of tin: x = +2. This means tin is in the +2 oxidation state in SnCl_2.
Use the Stock system naming convention, which includes the oxidation state of the metal in Roman numerals in parentheses. Therefore, the correct name is Tin(II) chloride.