We’re being asked to determine the correct electron configuration of a Magnesium (Mg) ion.

You are watching: What is the correct electronic configuration of magnesium, mg?

Before we can do that, we have to first write the electron configuration of a neutral ground state Mg

You can determine the ground-state electron configuration of Mg by locating the position in the periodic table.

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

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You see in the above illustration of the periodic table that Mg is in Period 3, Group 2A, and s-block


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Problem Details

What is the correct electron configuration of a magnesium ion, Mg2+ ?

A. 3s1 B. C. D. 3s1 E. 3s2


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