The coordination number of $\mathrm{Th}$ in ${\mathrm{K}}_4\left[\mathrm{Th}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_4{\left(\mathrm{OH}\right)}_{}\right]$ is  $\left({\mathrm{C}}_2{\mathrm{O}}_4^{2-}=\text{ Oxalato }\right)$

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