Which of the following elements is likely to form a ionic bond with potassium

A. CI

B. Au

C. Li

D. Ca

The element that is likely to form a ionic bond with potassium is Cl (answer A)

Explanation

Ionic bond - is a bond formed when a metal and a non metal react.

Metal loses electron (donate electrons) while non metal gains electrons (accept electrons) to form ionic bond.

potassium is a metal while Chlorine (Cl) is a non metal. They react to form an ionic bond by potassium donating 1 electron while chlorine accept 1 electron.