Question

Which of the following element pairs would most likely form an ionic compound?

Select the correct response:

Mg and Al

Cl and I

K and I

Al and K

Answer 1

Answer:

K and I

Explanation:

Potassium iodide (KI) forms an ionic bond. Potassium and iodine have very different electronegativities. The two atoms would form an ionic bond since ionic bonds form between atoms with a large difference in electronegativity (difference>1.7 using the Pauling scale will result in an ionic bond).

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