The one that can exhibit highest paramagnetic
behaviour among the following is :
gly = glycinato; bpy = 2, 2'-bipyridine
Solution
[Co(OX)<sub>2</sub>(OH)<sub>2</sub>]<sup>–</sup>
<br><br>(As here $\Delta$<sub>0</sub> > P so those ligands act as strong field ligand and pairing happens.)
<br><br><sub>27</sub>Co<sup>+5</sup> = [<sub>18</sub>Ar] 3d<sup>4</sup> 4s<sup>0</sup>( $t_{2g}^{2,1,1},e_g^{0,0}$ )
<br><br>It has highest number of unpaired e<sup>–</sup> s. so it is most paramagnetic.
About this question
Subject: Chemistry · Chapter: Coordination Compounds · Topic: Ligands and Coordination Number
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