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

$\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)
$\left[ Ni \left( CN _{4}\right]^{2-} \right.$ Diamagnetic
$\left[ Co ( CN )_{6}\right]^{3-} $ Diamagnetic