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

You are watching: Electron configuration of selenium 2-

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 an excited state). Neutral barium 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

Write the electron configuration for Se2 -.

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