What is the electron configuration for the Fe 3+ ion?
A)[Ar]4s 1 3d 6
B)[Ar]4s 0 3d 7
C)[Ar]4s 0 3d 5
D)[Ar]4s 2 3d 9
E)[Ne]3s 2 3p 10

Question

What is the electron configuration for the Fe 3+ ion?
A)[Ar]4s 1 3d 6 
B)[Ar]4s 0 3d 7 
C)[Ar]4s 0 3d 5 
D)[Ar]4s 2 3d 9 
E)[Ne]3s 2 3p 10

Quizplus · Accepted Answer

Fe: [Ar] 3d6 4s2 ^{3+: [Ne] 3s2 3p6}: [He] 2s2 2p6 Adding them together: [Ar] 4s2 3d6 3p6 Then adding the electron from the ^{3+ ion: [Ar] 4s2 3d6 3p5

Finally, adding the electron from the} ion: [Ar] 4s2 3d6 3p4. Therefore, the correct answer is C.

What Is the Electron Configuration for the Fe3+ Ion

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