Problem: The hot glowing gases around the Sun, the corona, can reach millions of degrees Celsius, temperatures high enough to remove many electrons from gaseous atoms. Iron ions with charges as high as 14+ have been observed in the corona. Which ions from Fe+ to Fe14+ are paramagnetic? Which would be most strongly attracted to a magnetic field?

🤓 Based on our data, we think this question is relevant for Professor Hope-Weeks' class at TTU.

FREE Expert Solution

Recall that for:

• diamagnetic: all of the electrons are paired

• paramagnetic: at least one electron is unpaired


Neutral Iron (Fe):

Atomic number = 26
# of electrons = 26 e-


Condensed electron configuration: (noble gas before Fe = [Ar])

Iron (Fe):        [Ar]4s23d6

  • cations - form when element loses electrons
    • remove e-'s (same number as charge)  from the highest numbered/outermost orbital 
    • Fe+ to Fe6+ (4s first then 3d)


When filling up the orbitals, keep in mind:

Aufbau Principle  totally fill in the lowest energy orbital first

Hund’s Rule  electron orbitals that are degenerate (same energy orbital) are first half-filled before they are totally filled    

      

Recall that:


s           _                 1 orbital  → max. of 2 electrons

p           _ _ _              3 orbitals  → max. of 6 electrons 

d          _ _ _ _ _          5 orbitals → max. of 10 electrons 


Ion

Electrons removed

Electron configuration

Unpaired e-

Fe+

1 e-

[Ar]4s213d6Fe+:   [Ar]4s13d6

1 (4s), 4 (3d) = 5

Fe2+

2 e-

[Ar]4s23d6→ Fe2+:   [Ar]3d6

4 (3d)

Fe3+

3 e-

[Ar]4s23d65→ Fe3+:   [Ar]3d5

5 (3d)

Fe4+

4 e-

[Ar]4s23d64→ Fe4+:   [Ar]3d4

4(3d)

Fe5+

5 e-

[Ar]4s23d63→ Fe5+:   [Ar]3d3

3(3d)

Fe6+

               6 e-         

[Ar]4s23d62→ Fe6+:   [Ar]3d2

2(3d)

Fe7+

7 e-

[Ar]4s23d61→ Fe7+:   [Ar]3d1

1(3d)

Fe8+

8 e-

[Ne]3s23p6→ Fe8+:   [Ne]3s23p6

None


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Problem Details

The hot glowing gases around the Sun, the corona, can reach millions of degrees Celsius, temperatures high enough to remove many electrons from gaseous atoms. Iron ions with charges as high as 14+ have been observed in the corona. Which ions from Fe+ to Fe14+ are paramagnetic? Which would be most strongly attracted to a magnetic field?

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Hope-Weeks' class at TTU.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.