Chemistry

posted by .

Iron and manesiu are two common elements found in numerous compounds. magnesium is always in the +2 oxidation state while iron exhibits oxidation states of +2, +3,+4,and +6. why would magnesium not be found in the these upper oxidation states.

  • Chemistry -

    Think about the electron configuration.
    12 Mg 1s2 2s2 2p6 3s2
    26 Fe 1s2 2s2 2p6 3s2 3p6 3d6 4s2

    You can see that if Mg loses two electrons it is left with a filled shell of 8 electrons in N=2.
    Fe, on the other hand, can lose two electrons from 4s2 and have 6 electrons remaining in the third shell, all with approximately the same energy as the 4s electrons; therefore, Fe is more likely to exhibit numerous oxidation states as well as the +2 state.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    describe objects that commonly undergoes oxidation. I already have an apple, copper, iron, aluminium, magnesium... would you have any more idea's
  2. Honors Chemistry

    I have to fill in the blanks of these questions with the elements H (hydrogen), Co (cobalt), Ga (gallium), and O (oxygen), but different sources are telling me different things: 7. Its most common oxidation state is -2 8. A metal with …
  3. Chemistry

    Oxidation State numbers For Fe3+ i got 3+ b/c Oxidation state monatomic ion = ionic charge and i got that answer wrong. i am receiving wrong answers for these below aswell. I used these rules for the following -Alkali metals are always …
  4. chemistry

    Assign an oxidation state to each atom in each of the following compounds. 1) Fe(CN)3 i know Fe= +3 but how do i find the oxidation state for C and N?
  5. science

    How do I find oxidation numbers of certain elements in compounds?
  6. Chemistry-Oxidation

    What is the oxidation state of V in each of the following compounds?
  7. Chemistry URGENT

    I need help understanding oxidation I have a problem that states: The proper assignment of oxidation numbers to the elements in the compound LiAsO3 would be: I think the answer is +1 for Li, +3 for As and -2 for O. I think I am confusing …
  8. chemistry

    For the reaction, shown below, determine which statements are True and which are False. 3Fe(s) + Cr2O72-(aq) +14H+(aq) → 3Fe2+(aq) + 2Cr3+(aq) + 7H2O(l) ξo=1.77V 1. The oxidizing agent is dichromate (Cr2O72-). 2. The iron …
  9. chemistry

    Which statement best describes the oxidation numbers of the atoms found in magnesium chloride?
  10. Chemistry

    The two most common oxidation states are Cr(III) and Cr(VI). Balance the following oxidation-reduction equations that involve one of these oxidation states of chromium. Assume that the reactions occur in acidic solution. A. Cr(s) + …

More Similar Questions