Hromati i dihromati su soli hromatne i dihromatne kiseline. Hromati sadrže hromat ion CrO42- i obojeni su intenzivno žuto. Dihromati sadrže anion Cr2O72- i obojeni su narandžasto. Zbog oksidacijskog stanja hroma (+6), hromati i dihromati su jaka oksidacijska sredstva.

Hromat ion
Dihromat ion

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