Answer:D. An ionic compound
Explanation:
An ionic compound by a complete transfer of valence electrons from an atom of a metal to an atom of a non metal so that both can attain a stable duplet or octet structure of noble gases. Potassium has 19 electrons with one valence electron while chlorine has 17 electrons with 7 valence electrons. Potassium will transfer its valence electron to chlorine atom, resulting in potassium having one positive charge and chlorine have one negative charge with both attaining a noble octet structure of noble gases. The compound formed is an ionic compound because it involves a positively charged potassium ion and a negatively charged chloride ion.
