What change in electron structure occurs when magnesium atom becomes a magnesium ion?

When a magnesium atom becomes a magnesium ion, it loses two electrons from its outermost shell, resulting in a positively charged ion (Mg²⁺). This change in electron structure transforms the neutral magnesium atom, which has 12 electrons, into an ion with only 10 electrons. Consequently, the ion achieves a stable electron configuration similar to that of neon, with a full outer shell.