# 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?

###### 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]4s213d6→Fe+:   [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?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Paramagnetism and Diamagnetism concept. You can view video lessons to learn Paramagnetism and Diamagnetism. Or if you need more Paramagnetism and Diamagnetism practice, you can also practice Paramagnetism and Diamagnetism practice problems.

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.