The ground-state electron configuration of V is ________. A)1s²2s²2p⁶3s²3p⁶4s²3d³ B)1s²2s²2p⁶3s²3p⁶3d⁵ C)1s²2s²2p⁶3s²3p¹¹ D)1s²2s²2p⁶3s²3p⁶4s²3d⁴ E)None of the above

Question

Quizplus · Accepted Answer

The ground-state electron configuration of V is 1s²2s²2p⁶3s²3p⁶4s²3d³. This is because V has 23 electrons, and the Aufbau principle states that electrons fill orbitals in order of increasing energy. The 1s, 2s, 2p, 3s, and 3p orbitals are all filled before the 4s and 3d orbitals. The 4s orbital is filled before the 3d orbital because it is lower in energy. The 3d orbital is filled with three electrons, which is the maximum number of electrons that can occupy a d orbital.

The Ground-State Electron Configuration of V Is ________