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  3. Chemistry
  4. The number of diamagnetic species among the following is [ Ni ( CO )4],[ NiCl 4]2-,[ CoF 6]3-,[ Cu ( NH 3)4]2+, [Ni(CN)4]2-

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Q. The number of diamagnetic species among the following is______
$\left[ Ni ( CO )_{4}\right],\left[ NiCl _{4}\right]^{2-},\left[ CoF _{6}\right]^{3-},\left[ Cu \left( NH _{3}\right)_{4}\right]^{2+}, [Ni(CN)_4]^{2-}$

Coordination Compounds

Solution:

image
No. of unpaired electrons $=0$
$\Rightarrow$ Diamagnetic
image
No. of unpaired electrons $=2$
$\Rightarrow$ Paramagnetic
image
No. of unpaired electrons $=4$
$\Rightarrow$ Paramagnetic
iv. $[Cu(NH_3)_4]^{2+}$
image
No. of unpaired electrons $=1$
$\Rightarrow$ Paramagnetic
image
No. of unpaired electrons $=0$
$\Rightarrow$ Diamagnetic