Explain why when naming Ba(NO3)2 (barium nitrate) and Fe(NO3)2 (iron(II) nitrate) the one contains roman numeral while the other does not.
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The roman numeral II is used to indicate that the barium ion in this compound has a charge of +2. This is necessary because the nitrate ion (NO3-) has a fixed charge of -1, so two nitrate ions are needed to balance the charge of one barium ion. Show more…
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Adi S.
Why do we call $\mathrm{Ba}\left(\mathrm{NO}_{3}\right)_{2}$ barium nitrate, but we call $\mathrm{Fe}\left(\mathrm{NO}_{3}\right)_{2}$ iron(II) nitrate?
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