# What is uranium's electron configuration?

Jun 18, 2014

The electron configuration for Uranium (U) is based upon the placement of uranium in the fourth column of the actinide series or f block. Therefore th electron configuration for uranium must end as $5 {f}^{4}$,

$1 {s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{6} 4 {s}^{2} 3 {d}^{10} 4 {p}^{6} 5 {s}^{2} 4 {d}^{10} 5 {p}^{6} 6 {s}^{2} 4 {e}^{14} 5 {d}^{10} 6 {p}^{6} 7 {s}^{2} 5 {f}^{4}$

This notation can be written in core notation or noble gas notation by replacing the$1 {s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{6} 4 {s}^{2} 3 {d}^{10} 4 {p}^{6} 5 {s}^{2} 4 {d}^{10} 5 {p}^{6} 6 {s}^{2} 4 {e}^{14} 5 {d}^{10} 6 {p}^{6}$ with the noble gas [Rn].

$\left[R n\right] 7 {s}^{2} 5 {f}^{4}$