Question

Electronic Configuration Of Co³⁺

Answer 1

Cobalt: Cobalt: is a hard ferromagnetic, silver-white, hard, lustrous, brittle element.

• Atomic mass: 58.9332 g.mol ^-1
• Atomic number: 27

The electronic Configuration of cobalt (Co) is:

• Co: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁷ 4s²

Electronic Configuration Of Co³⁺ is:
Co³⁺:1s² 2s² 2p⁶ 3s² 3p⁶4s¹3d⁵

• The 4s and 3d sublevels are nearly identical in energy, so the ion can become more stable by moving one of the 3d electrons to the 4s level.
• Then, both the 4s and 3d levels are half-filled, and the ion gains a little more stability.
• The electron configuration becomes 1s² 2s² 2p⁶ 3s² 3p⁶4s¹3d⁵