Thank you for reporting, we will resolve it shortly
Q.
Which one of the following shows maximum value of paramagnetic behaviour?
Bihar CECEBihar CECE 2007The d-and f-Block Elements
Solution:
Calculate the oxidation state of central metal ion as that gives idea of about number of unpaired or paired electrons.
$\left[ Sc ( CN )_{6}\right]^{3-}$
$Sc =21=1 s^{2} .2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{6}, 4 s^{2}, 3 d^{1}$
No unpaired electron hence, diamagnetic
