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Write the electron configuration for magnesium.

Based on the configuration, will magnesium lose or gain electrons to become a magnesium ion?

Write the electron configuration of a magnesium ion.

What noble gas has the same configuration as a magnesium ion?

Answer :

Final answer:

Magnesium has an electron configuration of 1s² 2s² 2p⁶ 3s². When it loses two electrons to become stable, it forms a magnesium ion (Mg²+) with an electron configuration of 1s² 2s² 2p⁶, identical to neon.

Explanation:

The electron configuration of a magnesium atom is 1s² 2s² 2p⁶ 3s². This shows that magnesium has 12 electrons surrounding its nucleus. As magnesium is in group 2 of the periodic table, it tends to lose its two valence electrons to attain a stable electron configuration similar to a noble gas. Therefore, a magnesium atom will lose two electrons, forming a magnesium ion (Mg²+). The electron configuration for a magnesium ion (Mg²+) is 1s² 2s² 2p⁶, which is same as that of the noble gas, neon

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