The difference in the number of unpaired electrons in `Co^2+` ion in its high-spin and low-spin octahedral complexes is _______ .

Answer

2

Explanation

`Co^(2**) rArr [Ar]3d^7`
High - spin complex : Low -spin complex :

3 unpaired electrons 1 unpaired electron
`:.` Difference = `3 - 1 = 2`