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Enter the formula of a chemical compound to find the oxidation number of each element. A net ionic charge can be specified at the end of the compound between { and }. For example: ZnCl4{2-} or NH2NH3{+}. Enter just an element symbol to show the common and uncommon oxidation states of the element.
You can use an oxidation number calculator to quickly and easily find the oxidation numbers for most compounds. Our oxidation number calculator will also draw out the structure of the molecule, including all bonds and charges, to help you check your work.
Balance and calculate the reducing and oxidizing agents in a redox (oxidation-reduction) reaction.
To calculate the oxidation numbers for KMnO4, count the number of atoms, draw the lewis structure by adding bonds, assign electrons from each bond, and count the number of electrons assigned to each atom.
Use the calculator below to balance chemical equations and determine the type of reaction (instructions). Chemical Equation (H2O = H + O) 🛠️
Calculate the oxidation number of each element in H2PO3{-} (Dihydrogenphosphite).
To calculate the oxidation numbers for O(C8H18), count the number of atoms, draw the lewis structure by adding bonds, assign electrons from each bond, and count the number of electrons assigned to each atom.