Predict the ground-state electron configuration of the followingions. Write your answers in abbreviated form, that is, beginningwith a noble gas in brackets.

(a) Ru2+ :

(b) : W3+ :

The abbreviated electron configuration is written using anelement symbol for a noble gas, followed by the configuration ofthe electrons in the outermost shell. For example, the abbreviatedelectron configuration of magnesium is [Ne]3s2. Ions of d-blockmetals typically lack the outermost s electrons that are present intheir neutral counterparts.