Observe the following complexes

From the above, the number of inner orbital complexes with paramagnetic nature is
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is a strong-field ligand so it pairs the electrons. Thus,


Thus, it is an inner-orbital but a diamagnetic complex.

will pair - up the electrons so :-


Thus, it is an inner-orbital and a paramagnetic complex.

is a weak-field ligand so :-



Thus, it is an outer-orbital and paramagnetic complex

is a weak-field ligand so :-



Thus, it is an inner-orbital and paramagnetic complex

and
is a strong-field ligand.
Thus,


Thus, it is an inner-orbital and diamagnetic complex.

and
is a weak-field ligand.
Thus,



Thus, it is an outer-orbital and paramagnetic complex. Therefore, there are two inner-orbital and paramagnetic complexes.
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