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Which substance has ionic bonds?

Which substance has ionic bonds?

A) CH4

B) O2

C) H2O

D) MgO


Solution: A substance that has a metal and a nonmetal is ionic and has an ionic bond. Metals are to the left of the staircase on the Periodic Table. Nonmetals are to the right of the staircase on the Periodic Table. Magnesium is a metal and oxygen is a nonmetal. Choice D.


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