In this problem, we are asked to determine the ground-state electron configuration of Cr2+, Cu2+, and Co3+.
Ground-state means that the element is in its lowest energy form (not in excited state).
Locating Cr, Cu, and Co in the periodic table:
You will see in the above illustration of the periodic table that:
Predict the ground-state electron configuration of the following ions. Write your answers in abbreviated form, that is, beginning with a noble gas in brackets.
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