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name of electron configuration

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peacefulltortoise:
I wonder how we call the outer electron configuration state of Ar, Fe3+ and Na+? Are they "Full", "half-full" and what else? can anyone help me to correct these words? Thank you.

Donaldson Tan:
can you list their electronic configurations?

peacefulltortoise:
They are Ar: 1s2 2s2 2p6 3s2 3p6; Fe3+: 1s2 2s2 2p6 3s2 3p6 3d5 (each obital has one electron); Na+:  1s2 2s2 2p6. Could you name each of their states for me?

Donaldson Tan:

--- Quote from: anquyanquyanquy on September 24, 2005, 01:08:47 AM ---Ar: 1s2 2s2 2p6 3s2 3p6
--- End quote ---
Although there are 3d orbitals, the energy level between 3p and 3d is so big that the configuration for 3s2 3p6 is considered full.


--- Quote from: anquyanquyanquy on September 24, 2005, 01:08:47 AM --- Fe3+: 1s2 2s2 2p6 3s2 3p6 3d5
--- End quote ---
It is considered half-filled because the 3d subshell can contain a max of 10electrons and it already contain 5.


--- Quote from: anquyanquyanquy on September 24, 2005, 01:08:47 AM --- Na+:  1s2 2s2 2p6

--- End quote ---
This is full because all the 2nd shell already contain the maximum number of electrons.

peacefulltortoise:
Thank you, geodome.

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