For octahedral Mn(II) and tetrahedral Ni(II)
complexes, consider the following statements:
(I) both the complexes can be high spin.
(II) Ni(II) complex can very rarely be low spin.
(III) with strong field ligands, Mn(II) complexes
can be low spin.
(IV)aqueous solution of Mn(II) ions is yellow in
colour.
The correct statements are :
Solution
(I) Under weak field ligand, octahedral Mn(II) and tetrahedral Ni(II) both the complexes are high spin
complex.
<br><br>(II) Tetrahedral Ni(II) complex can very rarely be low spin because square planar (under strong ligand)
complexes of Ni(II) are low spin complexes.
<br><br>(III)With strong field ligands Mn (II) complexes can be low spin because they have less number of unpaired
electron (unpaired electron = 1) While with weak field ligands Mn(II) complexes can be high spin
because they have more number of unpaired electron (unpaired electron = 5)
<br><br>(IV) Aqueous solution of Mn(II) ions is pink in colour.
About this question
Subject: Chemistry · Chapter: Coordination Compounds · Topic: Ligands and Coordination Number
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