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The answer is 3.

Fe -> Fe3+ + 3e

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12y ago
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5mo ago

An Fe3+ ion has 5 3d electrons. This is because iron (Fe) has 7 total 3d electrons in its neutral state, while the Fe3+ ion has lost 3 electrons, leaving 5 remaining in the 3d orbital.

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11y ago

no, it happens when iron loses 3 electrons

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13y ago

The element iron has 26 electrons. When it forms Fe3+ to form Iron III Oxide there are only 23 electrons.

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11y ago

-3

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Q: How many 3d electrons does an Fe3 plus ion have?
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Related questions

How many electrons has an atom of iron lost to become an Fe3 plus ion?

it should lose 3 electrons


How many unpaired electrons in (d) subshell in ferric Fe3?

5 unpaired electrons There are 5 unpaired electrons in the Fe3+ ion. The reason for this is that Iron has the electron configuration Ar3d5.


How many unpaired electrons are in Iron-III?

Iron-III (Fe3+) has 5 unpaired electrons. Each Fe3+ ion has five 3d electrons that are unpaired.


What is the Formula for Ferric ion?

The formula for ferric ion is Fe3+. It is the ion form of iron when it has lost three electrons.


How many electrons does an H plus ion have in the first shell?

The H+ ion has no electrons.


How does a iron atom become a ferric ion?

When iron loses three electrons it becomes ferric (Fe3+) ion


How many electrons does a Co3 plus ion have?

A Co3+ ion has lost three electrons from its neutral state, so it has 23 electrons.


How many unpaired electrons are there in Fe3 plus ion?

In the Fe^3+ ion, there are 5 unpaired electrons. This is because the Fe atom has 5 electrons in its 3d orbitals that remain unpaired when it loses 3 electrons to form the Fe^3+ ion.


What does Fe3- stand for on the periodic table?

Fe3- represents an ion of iron with a 3- charge. The symbol "Fe" refers to the element iron, and the superscript "-3" indicates that the ion carries a negative charge of 3. The 3- charge means that the ion has gained three electrons to achieve a stable configuration.


What ion has 24 protons and 21 electrons?

The ion with 24 protons and 21 electrons is a 2+ ion of chromium, written as Cr2+. This ion has lost two electrons to achieve a stable electron configuration.


How many electrons are in an Mg2 plus ion?

An Mg2+ ion has lost two electrons, resulting in a total of 10 electrons. Magnesium normally has 12 electrons but when it forms a 2+ ion, it loses two electrons.


What is Fe3 positive?

Fe3+ is the chemical symbol for iron (III) ion, which is a positively charged ion of iron. It means that the iron atom has lost three electrons, resulting in a charge of +3. Iron (III) ions are commonly found in compounds and minerals.