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Why co(nh3)+2 is high spin complex and diamagnetic?evn though co(nh3)is diamagnetic why it is high spin complex and how

Why co(nh3)+2 is high spin complex and diamagnetic?evn though co(nh3)is diamagnetic why it is high spin complex and how

Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
NH3 is not a strong field ligand it is neutral ligand.
in Ni(CN)6 2+ pairing takes place and so elctron enters into  t2g as CN is a strong field ligand
the distribution of electrons in degenerate orbital t2g follows hunds rule for the first 3 electrons 
but the 4th electron enters into t2g and gets paired up if the ligand is strong
and it enters into eg if the ligand is weak
weak field ligands have low spin and strong field ligands have high spin.

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