The Electron Configuration: Condensed Video Lessons

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Problem: Select the ground state electron configuration for selenium (Se).(a) [Ar] 3d104p4(b) [Ar] 4s23d84p6(c) [Ar] 3d104p6(d) [Ar] 4s13d54p3(e) [Ar] 4s23d104p4

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Determine the electron configuration of Se using the concept of orbital diagram and electron configuration

Before we can do that, we have to first write the electron configuration of a neutral ground state selenium (Se).

You can determine the ground-state electron configuration of Selenium (Se) by locating the position Se in the periodic table.

Ground-state means that the element is in its lowest energy form (not in excited state). Neutral Se means it has no charge, meaning no electrons are removed or added in the atom.

You see in the above illustration of the periodic table that Se is in Period 4, Group 6A and p-block

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Problem Details

Select the ground state electron configuration for selenium (Se).

(a) [Ar] 3d104p4

(b) [Ar] 4s23d84p6

(c) [Ar] 3d104p6

(d) [Ar] 4s13d54p3

(e) [Ar] 4s23d104p4

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