We are asked to determine the electron configuration of Ag+.
First, determine the ground-state electron configuration of Ag.
You can determine the ground-state electron configuration of Silver (Ag) by referring to the periodic table and locating the position of Ag in the periodic table.
Ground-state means that the element is in its lowest energy form (not in excited state). Ca has no charge which means that no electrons are removed or added in the atom.
Provide the electron configuration for Ag+.