🤓 Based on our data, we think this question is relevant for Professor Causey's class at UNF.
We are being asked to find ions with electron configuration of nd8. These must be transition metal ions, since they have electrons in their d-orbitals. Also, these must be cations (positively charged ions), because metals have their valence electrons located too far from the nucleus. And it is very easy to lose them.
Recall that the general valence electron configuration of d-block atoms is nsx(n-1)dy, where x stands for 1 or 2 electrons on s-orbital, and y stands for maximum of 10 electrons on d-orbital, and n is a row number.
Find the ions in the periodic table that have an electron configuration of nd8 (n = 3, 4, 5...)