# What is the ground state shorthand notation for iron (Fe)?

For $F e$, $Z = 26$.
$1 {s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{6} 4 {s}^{2} 3 {d}^{6}$
So going back to the inert gas, argon ($Z = 18$), we get $\left[A r\right] 4 {s}^{2} 3 {d}^{6}$.