Chemistry - Coordination Chemistry Question with Solution | TestHub

Amongst the following, the total number of species which are diamagnetic is _______.

${\text{K}}_{\text{4}}\left[\text{Fe}{\left(\text{CN}\right)}_{\text{6}}\right]{\text{, K}}_{\text{3}}\left[\text{Cr}{\left(\text{CN}\right)}_{\text{6}}\right]{\text{, K}}_{\text{3}}\left[\text{Co}{\left(\text{CN}\right)}_{\text{6}}\right]{\text{,K}}_{\text{2}}\left[\text{Ni}{\left(\text{CN}\right)}_{\text{4}}\right]\text{, }{\left[\text{Co}{\left({\text{NH}}_{\text{3}}\right)}_{\text{6}}\right]}^{\text{3+}}{\text{, K}}_{\text{2}}\left[{\text{TiF}}_{\text{6}}\right]\text{, }{\left[\text{Pt}{\left({\text{NH}}_{\text{3}}\right)}_{\text{4}}\right]}^{\text{2+}}$