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by the ion-electron method In the ion-electron method (also called the half-reaction method), the redox equation is separated into two half-equations - one for oxidation and one for reduction. Each of these half-reactions is balanced separately and then combined to give the balanced redox equation.

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For example, in methane (CH 4), carbon shares an electron pair with each hydrogen atom; the total number of electrons shared by carbon is eight, which corresponds to the number of electrons in the outer shell of neon; each hydrogen shares two electrons, which corresponds to the electron configuration of helium.

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If this question refers to the element with Ar 3d6 then Fe is the answer and it does form 3+ ion in FeCl3 and Fe2O3. However, the way the question is worded makes me think the 3+ ion is Ar 3d6 which would make the element Ar 3d6 + 3 electrons and if those were arranged as 3d7 + 4s2 then the two 4s electrons + 1 of the 3d could be lost to give a 3+ ion which make the element Co which does have a +3 ion.

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Writing Electron Configurations. The distribution of electrons among the orbitals of an atom is called the electron configuration. In a ground state configuration, all of the electrons are in as low an energy level as it is possible for them to be. When an electron absorbs energy, it occupies a higher...Dec 17, 2019 · Iron(III) oxide, Fe2O3, otherwise known as rust, can react with pure carbon to reform solid iron and carbon monoxide. A balanced chemical equation for this reaction is included below. Fe2O3(s) + 3C(s) ? 2Fe(s) + 3CO(g) a) Assuming you have 635 g of iron(III) oxide and 185 g of carbon, which of these reagents would be considered the limiting ...

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And that is wrong because there is an electron in the final answer. You cannot have electrons appear in the final answer of a redox reaction. (You can in a half-reaction, but remember half-reactions do not occur alone, they occur in reduction-oxidation pairs.) 2) Here are the correct half-reactions: 4e¯ + 4H + + O 2---> 2H 2 O

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May 24, 2019 · An ionic bond is a chemical bond between two atoms in which one atom seems to donate its electron to another atom. Covalent bonds, on the other hand, appear to involve two atoms sharing electrons reach a more stable electron configuration. Electron Configuration Exceptions (page 245 in your textbook) ... When 4.50 g of Fe2O3 (molar mass=159.7 g/mol) is reduced with excess H2 in a furnace, 2.60 g of ...

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