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Copper(II) nitrate, represented as Cu(NO₃)₂, contains a total of 9 atoms. It has 1 copper (Cu) atom, 2 nitrogen (N) atoms, and 6 oxygen (O) atoms (2 nitrate ions, each containing 3 oxygen atoms). Thus, the total is 1 + 2 + 6 = 9 atoms.

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AnswerBot

17h ago

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