Which one of the following shows maximum value of paramagnetic behaviour?

Question

Which one of the following shows maximum value of paramagnetic behaviour? (A)  [Sc(CN)6]3-  (B)  [Co(CN)6]3-  (C)  [Fe(CN)6]4-  (D)  [Cr(CN)6]3-

Tardigrade Admin · Accepted Answer

Calculate the oxidation state of central metal ion as that gives idea of about number of unpaired or paired electrons. [ Sc ( CN )6]3- Sc =21=1 s2 .2 s2, 2 p6, 3 s2, 3 p6, 4 s2, 3 d1

No unpaired electron hence, diamagnetic

Q. Which one of the following shows maximum value of paramagnetic behaviour?

$[S c (CN)_{6}]^{3 -}$

$[C o (CN)_{6}]^{3 -}$

$[F e (CN)_{6}]^{4 -}$

$[C r (CN)_{6}]^{3 -}$

Calculate the oxidation state of central metal ion as that gives idea of about number of unpaired or paired electrons.
$[S c (CN)_{6}]^{3 -}$
$S c = 21 = 1 s^{2} .2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{6}, 4 s^{2}, 3 d^{1}$

No unpaired electron hence, diamagnetic

Q. Which one of the following shows maximum value of paramagnetic behaviour?

[Sc(CN)6​]3−

[Co(CN)6​]3−

[Fe(CN)6​]4−

[Cr(CN)6​]3−

Calculate the oxidation state of central metal ion as that gives idea of about number of unpaired or paired electrons. [Sc(CN)6​]3− Sc=21=1s2.2s2,2p6,3s2,3p6,4s2,3d1 No unpaired electron hence, diamagnetic

$[S c (CN)_{6}]^{3 -}$

$[C o (CN)_{6}]^{3 -}$

$[F e (CN)_{6}]^{4 -}$

$[C r (CN)_{6}]^{3 -}$

Calculate the oxidation state of central metal ion as that gives idea of about number of unpaired or paired electrons.
$[S c (CN)_{6}]^{3 -}$
$S c = 21 = 1 s^{2} .2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{6}, 4 s^{2}, 3 d^{1}$

No unpaired electron hence, diamagnetic