What is the shorthand notation for a ground-state silicon (Si) atom?

1 Answer
Mar 29, 2018

[Ne] #3s^2 3p^2#


Silicon (ground state) has 14 electrons. Using this information and the electron configuration table:
We know that Silicon's full electron configuration is #1s^2 2s^2 2p^6 3s^2 3p^2#

To write the short-hand notation we simply look for the noble gas that can fit silicon, in this case it would be neon with 10 electrons.

So we can rewrite #1s^2 2s^2 2p^6 3s^2 3p^2# as:
[Ne] #3s^2 3p^2#