The classification of these ions that are in this question can be classified in the order they appear as:
This is the complex ion that has more number of unpaired electrons in the d-orbitals of the central atom. This ions is known to be paramagnetic.
What is a low spin complex ion?
This is the complex that is known to have paired electron at low levels of energy.
Read more on complex ions here: https://brainly.com/question/7290112
Complete question:
Classify the following complex ions as high spin or low spin:
1) [ Fe (c.n)6 ] 4- no unpaired e-
2) [ Fe (c.n)6 ] 4- one unpaired e-
3) [ Co (NH3) 6 ] 2+ three unpaired e- s
4) [ Co F6 ] 3- four unpaired e-'s
5) [ Mn (H2O) 6 ] 2+ five unpaired e- 's
