Determine the oxidation state of atoms of chemical elements: H2S, O2, NH3, HNO3, Fe, K2Cr2O7
| September 17, 2021 | education
The oxidation state is the conditional value of the charge of an atom, if it gave valence electrons to another atom (or received them from another atom). Certain rules apply when calculating oxidation states.
The oxidation state of an atom in a simple substance is zero.
The sum of the oxidation states, taking into account the number of atoms of each type in the molecule, is equal to zero.
Metals, as a rule, have permanent positive oxidation states equal to the group number in the Periodic Table of the Chemical Elements.
The oxygen atom usually has an oxidation state of -2; hydrogen atom +1.
Answer: H+2S-2, O02, N-3H+3, H+N+5O-23, Fe0, K+2 Cr2+6O-27.
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