Write the electron configuration for each ion. c. Sr²⁺ d. Co³⁺ e. Cu²⁺

Verified step by step guidance

1. Identify the atomic number of the neutral atom for each element: Sr (38), Co (27), Cu (29).
2. Write the electron configuration for the neutral atom: Sr: [Kr] 5s^2, Co: [Ar] 3d^7 4s^2, Cu: [Ar] 3d^10 4s^1.
3. For Sr^2+, remove 2 electrons from the outermost shell of Sr: Remove from 5s orbital.
4. For Co^3+, remove 3 electrons starting from the outermost shell of Co: Remove from 4s and then 3d orbitals.
5. For Cu^2+, remove 2 electrons starting from the outermost shell of Cu: Remove from 4s and then 3d orbitals.