Understanding Oxidation Numbers in Chemistry

Oxidation is a process where atoms or ions gain a more positive oxidation state, while reduction involves attaining a more negative oxidation state. This informative content explains oxidation numbers, uncombined elements, monoatomic ions, and oxidation rules in compounds. Practice determining oxidation numbers for elements in different compounds like NaCl, H2SO4, AgNO3, CO2, SF6, and NO3-.

• Oxidation numbers
• Chemistry
• Elements
• Ions
• Compounds

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Uploaded on Aug 05, 2024 | 5 Views

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2. Oxidation Process in which atoms or ions attain a more + oxidation state Ex. Na Na+ + e Cl- Cl + e Ca+ Ca2+ + e

3. Reduction Atoms or ions of elements attain a more negative oxidation state Ex. Cl + e Cl- Mnemonic: OIL RIG Oxidation involves loss, reduction involves gain

4. Oxidation Number Uncombined elements have oxidation # of 0 Monoatomic ions have oxidation # equal to their ion charge F is always 1 in a compound O is almost always 2 in a compound H is +1 in all compounds except those with metals (then its 1) More electronegative element is assigned a number equal to its ion charge Algebraic sum of oxidation numbers in a compound is always zero

5. Practice Determine the oxidation numbers for each element in the compounds below NaCl H2SO4 AgNO3 CO2 SF6 NO3-