The ionic compound CsF consists of 1 Cs\(^+\) ion and 1 F\(^-\) ion.
In CsF, cesium (Cs) loses one electron to become a Cs\(^+\) ion, and fluorine (F) gains one electron to become an F\(^-\) ion. Therefore, the correct option is:
✓ 1 Cs\(^+\) ion and 1 F\(^-\) ion.