Question

Do cr3+ and v2+ have the same or different electron configurations?

Answer 1

Cr3+ and V2+ have different electron configurations due to the exceptions in the filling order of electrons in the d orbitals.

Step-by-step explanation:

Cr3+ and V2+ have different electron configurations.

Cr3+ has the electron configuration [Ar] 3d3, while V2+ has the electron configuration [Ar] 3d3.

The reason for the difference is that Cr and Cu are exceptions to the normal filling order of electrons in the d orbitals. They have a half-filled or completely filled subshell, which represents a condition of preferred stability. As a result, an electron from the 4s orbital shifts to the 3d orbital to achieve the additional stability. This is why Cr has the electron configuration [Ar] 3d5 4s1 instead of [Ar] 3d4 4s2. Similarly, V2+ has the electron configuration [Ar] 3d3 instead of [Ar] 3d4 4s2.

Answer 2

Chromium has the electronic configuration of {AR} 4s2, 3d4 while C3r+ has 3d3. While Vanadium has the electronic configuration of {Ar} 4s2, 3d3 while V2+ has the electronic configuration of 3d3. They have the same electronic configuration because both of the two elements have the same amount of electrons.