# What is ground state electron configuration of W3+?

Jan 18, 2016

${W}^{3 +} : \left[X e\right] 4 {f}^{14} 5 {d}^{3}$
For example, ${W}^{3 +}$. "3+" means removing 3 electrons to its number of electrons in ground state. Tungsten has 74 electrons in the ground state with electron configuration of $W : \left[X e\right] 4 {f}^{14} 5 {d}^{4} 6 {s}^{2}$. Removing 3 electrons would give us a total of 71 electrons. Therefore, ${W}^{3 +} : \left[X e\right] 4 {f}^{14} 5 {d}^{3}$