Problem: What is the charge on the strontium ion?

• Figure out the ground state configuration of Sr and determine the possible ion form for Sr by adding or removing electrons from it.
• You can determine the ground-state electron configuration of Strontium (Sr) by referring to the periodic table and locating the position of Sr in the periodic table.

Ground-state means that the element is in its lowest energy form (not in excited state). Sr has no charge which means that no electrons are removed or added in the atom.