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How do you write the noble-gas electron configuration for Si?

1 Answer

FB B. · Ernest Z.

Sep 29, 2016

${(Ne)3s}^{2} {3p}^{2}$ $"(Ne)3s"^2 "3p"^2$

Explanation:

You noticed that $p$ $"p"$ has the superscript $2$ $2$ .

That means there are $2$ $2$ electrons in the $2p$ $"2p"$ subshell.

The noble gas notation makes the electronic configuration short.

Notice how the noble gas notation uses the closest noble gas that comes before the element.

$Ar = {(Ne)3s}^{2} {3p}^{2}$ $"Ar" = "(Ne)3s"^2 "3p"^2$

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