Question

Why tetrahedral complexes has lower.Spin only magnetic moments than octahedral complexes?

Answer 1

Unlike octahedral complexes, the ligands of tetrahedral complexes come in direct contact with the dxz, dxy, and dyz orbitals. Thus, these orbitals have high electron-electron repulsion, due to the direct contact, and thus higher energy. ... Because of this, most tetrahedral complexes are high spin.