# What element has the electron configuration 1s^(2)2s^(2)2p^(6)3s^(2)3p^(2)?

Jan 18, 2016

Given that the element is neutral, and that there are 14 electrons, clearly $Z$, the atomic number $=$ $14$.
If $Z$ $=$ $14$, the element is unequivocally indentified. Consult your handy Periodic Table.
It was given that there were 14 electrons. Given a neutral atom, there MUST be 14 positively charged particles in the element's nucleus. Thus $Z$, the atomic number, MUST be 14.
I'll give you a hint, the element's name starts with an $\text{S}$, hmm, sulfur, selenium, scandium??????