In which of the following complexes will H_2O | vedclass

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(C) $H_2O$ is generally considered a weak field ligand in the spectrochemical series. However,its behavior can be influenced by the oxidation state of

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$[Mn(H_2O)_6]^{+2}$

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(C) $H_2O$ is generally considered a weak field ligand in the spectrochemical series. However,its behavior can be influenced by the oxidation state of the central metal ion. In $[Mn(H_2O)_6]^{+2}$,$Mn$ is in the $+2$ oxidation state,and $H_2O$ acts as a weak field ligand. In $[Co(H_2O)_6]^{+3}$,$Co$ is in the $+3$ oxidation state,where $H_2O$ acts as a strong field ligand due to the high charge density of the metal ion. In $[Pt(H_2O)_4]^{+2}$,$Pt$ is a $5d$ series element,and complexes of $5d$ metals are almost always low-spin (strong field behavior). Therefore,$H_2O$ acts as a weak field ligand specifically in $[Mn(H_2O)_6]^{+2}$.

In which of the following complexes will $H_2O$ act as a weak field ligand?

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