Oxidation Numbers Overview
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Questions and Answers

What is the oxidation state of the iron ion Fe3+?

  • +2
  • +4
  • +1
  • +3 (correct)

    • Which ion has an oxidation state of -2?

  • O+
  • Fe3+
  • O2- (correct)
  • Fe2+

    • What does the oxidation number represent?

  • The atomic number of an atom
  • The total number of electrons gained or lost by an atom in a bond (correct)
  • The number of protons in an atom
  • The mass of an atom

    • Why is it important to assign oxidation numbers in chemical reactions?

    <p>To identify the valency of a compound</p> Signup and view all the answers

    What does a positive oxidation number indicate?

    <p>The atom has lost electrons</p> Signup and view all the answers

    How do oxidation numbers help in balancing chemical equations?

    <p>By looking at changes in the oxidation numbers of the atoms in each compound</p> Signup and view all the answers

    What is the purpose of systematic nomenclature of chemical compounds?

    <p>To help name compounds based on their oxidation numbers</p> Signup and view all the answers

    What is the oxidation number of sulfur in S8?

    <p>0</p> Signup and view all the answers

    In the compound UF6, what is the oxidation number of uranium?

    <p>+6</p> Signup and view all the answers

    What is the oxidation number of fluorine in uranium hexafluoride (UF6)?

    <p>-1</p> Signup and view all the answers

    Which statement about the oxidation state of hydrogen is correct?

    <p>Hydrogen's oxidation number varies depending on the compound.</p> Signup and view all the answers

    What is the oxidation state of chlorine in the chlorate ion (ClO3-)?

    <p>+5</p> Signup and view all the answers

    When assigning oxidation numbers, what does the sum of all oxidation states in a neutral compound equal to?

    <p>0</p> Signup and view all the answers

    If sulfur is oxidized in a reaction from -2 to 0, what is its change in oxidation number?

    <p>+2</p> Signup and view all the answers

    In a redox reaction, which element typically has a -1 oxidation state when found in a molecule?

    <p>Fluorine</p> Signup and view all the answers

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