Question

Tell me all divalent molecules

Answer 1

All group 2 cations are divalent some are also of d block

Answer 2

Answer:

Explanation:

Divalent cations like Mn, Fe, Co, Ni, Cu, Zn, etc., due to the splitting of the d-electrons of the Me2+ cations in the environment of the X− anions, at mixing with alkali metal halides, show a certain degree of covalence of bonds. The splitting of d-electrons leads to an increase of energy, which is called the ligand Þeld stabilization energy (LFSE). This splitting varies with the symmetry of the coordination sphere of the cation. The change of the cation coordination and its thermodynamic stability is also affected by the LFSE. This effect can be seen on phase diagrams of various systems.