Final answer:
The compound formed by tin +2 and fluorine is tin(II) fluoride with the formula SnF2.
Step-by-step explanation:
In this case, the compound formed by tin +2 and fluorine is called tin(II) fluoride. The roman numeral +2 indicates that the tin ion has a charge of +2, while fluorine has a charge of -1. Since the charges must balance in the compound, we need two fluoride ions to combine with one tin(II) ion. Therefore, the formula for tin(II) fluoride is SnF2.