What is electron configuration ni2+?

Here's information about the electron configuration of Ni²⁺:

The element nickel (Ni) has an atomic number of 28. Its neutral ground state electron configuration is [Ar] 3d⁸4s².

When nickel forms a 2+ cation (Ni²⁺), it loses two electrons. These electrons are removed from the outermost shell, which are the 4s orbitals.

Therefore, the electron configuration of Ni²⁺ is [Ar] 3d⁸. This indicates that it has 8 electrons in its 3d orbitals. The resulting ion is paramagnetic due to the presence of unpaired electrons in the 3d orbitals. The presence of these d electrons also contributes to the formation of colored complexes, a common feature of [https://www.wikiwhat.page/kavramlar/transition%20metal%20complexes](transition metal complexes).