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Chemistry 13 Online
OpenStudy (ralfonso9):

Which of the following contains ionic bonding? CaO N2O4 CO2 NO2

OpenStudy (sweetburger):

Ionic bonding is the complete transfer of the valence electrons of one atom to another atom. This usually is due to the high electronegativity difference between two elements in a compound and largely occurs between metals and nonmetals.

OpenStudy (amtran_bus):

So from sweetburger's answer, it is A @Ralfonso9

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