Final answer:
The compounds among the given options are KF (Potassium Fluoride) and NaCl (Sodium Chloride).
Step-by-step explanation:
In this question, the compounds are those substances which are formed by the combination of two or more elements.
Based on this definition, the compounds among the given options are:
- KF - Potassium Fluoride
- NaCl - Sodium Chloride
These substances are compounds because they are formed by the combination of different elements, potassium and fluorine in the case of KF and sodium and chlorine in the case of NaCl.