Question

${\left[Fe(CN{)}_6\right]}^{4-}$
${\left[Fe(CN{)}_6\right]}^{3-}$
${\left[Ti(CN{)}_6\right]}^{3-}$
${\left[Ni(CN{)}_4\right]}^{2-}$
${\left[Co(CN{)}_6\right]}^{3-}$
Among the given complexes, number of paramagnetic complexes is __

Answer 1

Answer: 2

${\left[Fe(CN{)}_6\right]}^{4-}$ Diamagnetic
${\left[Fe(CN{)}_6\right]}^{3-}$ Paramagnetic (1 unpaired electron)
${\left[Ti(CN{)}_6\right]}^{3-}$ Paramagnetic (1 unpaired electron)
$[Ni{\left(C{N}_4\right]}^{2-}$ Diamagnetic
${\left[Co(CN{)}_6\right]}^{3-}$ Diamagnetic