Question

which element will form an ionic bond with potassium, k? rubidium, rb boron, b sulfur, s strontium, sr

Explanation:

Step1: Recall ionic bond formation

Ionic bonds form between metals and non - metals. Potassium (K) is a metal (Group 1).

Step2: Analyze each option

• Rubidium (Rb): It is a metal (Group 1). Two metals do not form an ionic bond.
• Boron (B): It is a metalloid. The bond with K is not a typical ionic bond.
• Sulfur (S): It is a non - metal (Group 16). A metal (K) and non - metal (S) can form an ionic bond (e.g., \(K_2S\)).
• Strontium (Sr): It is a metal (Group 2). Two metals do not form an ionic bond.

Answer:

Sulfur, S