Which is more stable Fe2+ or Fe3+?

  • Thread starter Kahizinn
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In summary, Fe2+ and Fe3+ are ions of iron with different numbers of electrons, with Fe2+ having two fewer and Fe3+ having three fewer electrons than the neutral atom. Fe2+ is generally considered more stable than Fe3+ due to its full outer electron shell. Factors such as pH, temperature, and other chemicals can affect the stability of both ions. In biological systems, Fe2+ and Fe3+ have important roles in oxygen transport, enzyme activity, DNA synthesis, immune response, and wound healing.
  • #1
Kahizinn
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I understand that Iron3+ has a half filled 3-d level, but I also know that in reality when one electron is lost from elemental iron, the lone pair from the 3-d level will move to the 4s level to stablelize it.

What I really want to know is which ion is more abundant in nature?

Thanks guys
 
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  • #2
It depends on how you define "nature". In oxygen rich atmosphere iron easily gets oxidized to +3, in early times of Earth atmosphere didn't contain free oxygen, so iron was usually found as +2.
 

Related to Which is more stable Fe2+ or Fe3+?

1. What is the difference between Fe2+ and Fe3+?

Fe2+ and Fe3+ are both ions of the element iron, but they differ in their number of electrons. Fe2+ has two fewer electrons than the neutral atom of iron, while Fe3+ has three fewer electrons.

2. Which ion, Fe2+ or Fe3+, is more stable?

Fe2+ is generally considered to be more stable than Fe3+. This is because Fe2+ has a full outer electron shell, making it more chemically stable than Fe3+, which has an incomplete outer electron shell.

3. Why is Fe2+ more stable than Fe3+?

The stability of an ion is determined by its electronic configuration. Since Fe2+ has a full outer electron shell, it is considered to be more stable than Fe3+, which has an incomplete outer electron shell.

4. Can the stability of Fe2+ and Fe3+ be affected by environmental factors?

Yes, the stability of Fe2+ and Fe3+ can be affected by factors such as pH, temperature, and the presence of other chemicals. These factors can alter the electronic configuration of the ions, making them more or less stable.

5. What is the role of Fe2+ and Fe3+ in biological systems?

Fe2+ and Fe3+ are important ions in biological systems, as they play a crucial role in various biochemical processes such as oxygen transport, enzyme activity, and DNA synthesis. Fe2+ is also an essential nutrient for many organisms, while Fe3+ is involved in the immune response and wound healing.

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