Which compound most likely has atoms held together by ionic bonds? A. carbon monoxide, CO
b. hydrogen peroxide, h2o2
c. ammonia, nh3
d. magnesium sulfide, mgs

d. magnesium sulfide, mgs

Explanation:

Ionic bonds or also called eletrovalent bond is one of the chemical bonds that forms between the atoms of molecules or compounds. It is the kind of bond that forms between a positively charged atom and a negatively charged atom. The positive atom transfers electrons to the negative atom.

In this question, Magnesium Sulfide, MgS is a compound whose atoms are held together by ionic bonds. The magnesium ion (cation) transfers its two valence electrons to the sulfur ion (anion) to form the stable MgS.

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