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This question asks, how does the octet rule explain the formation of a magnesium ion? if we look at the periodic table, magnesium is in group two.
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The octet rule states, atoms will form ions in order to obtain a stable octet or eight valence electrons.
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Magnetium is in group two.
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It has two valence electrons in its outer shell.
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It will lose its two valence electrons in order to obtain an octet for a noble gas configuration.
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One noble gas is the same electron configuration as the magnesium ion.
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So looking at magnesium on the periodic table, if it loses two electrons, then we're going to count one electron, two electrons, and we see that the noble gas in the previous row is going to be neon.
00:56
Why are group 1a and group 2a elements found in many compounds, but not group 8 elements? so group 1 and 2 elements are called the alkali and alkaline earth metals...