What element has the electron configuration 1s2 2s2 2p6 3s2 3p2?

May 26, 2014

The electron configuration $1 {s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{2}$ is the element Silicon.

The key to deciphering this is to look at the last bit of information of the electron configuration $3 {p}^{2}$.

The '3' informs us that the element is in the 3rd Energy Level or row of the periodic table. The 'p' tells us that the element is found in the p-block which are all of the Groups to the right of the transition metals, columns 13-18. The superscript '2' tells us that the element is found in the 2nd column of the p-block Group 14.

I hope this was helpful.
SMARTERTEACHER

Oct 3, 2015