Refer to the periodic table, and decide which of the following molecules is held together by ionic bonds.

Question

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KCl is held together by ionic bonds because potassium (K) and chlorine (Cl) have a large difference in electronegativity, causing them to transfer electrons and form ions that attract due to opposite charges. The other two molecules, NH₃ and CO₂, do not contain elements with large differences in electronegativity and are therefore not held together by ionic bonds.

Refer to the Periodic Table, and Decide Which of the Following