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  3. Chemistry
  4. The number of paramagnetic species from the following is [ Ni ( CN )4]2- ⋅[ Ni ( CO )4],[ NiCl 4]2- [ Fe ( CN )6]4-,[ Cu ( NH 3)4]2+ [ Fe ( CN )6]3- text and [ Fe ( H 2 O )6]2+

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Q. The number of paramagnetic species from the following is ________
$ {\left[ Ni ( CN )_4\right]^{2-} \cdot\left[ Ni ( CO )_4\right],\left[ NiCl _4\right]^{2-}} $
$ {\left[ Fe ( CN )_6\right]^{4-},\left[ Cu \left( NH _3\right)_4\right]^{2+}}$
$ {\left[ Fe ( CN )_6\right]^{3-} \text { and }\left[ Fe \left( H _2 O \right)_6\right]^{2+}}$

JEE MainJEE Main 2023Coordination Compounds

Solution:

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$\left[ Cu \left( NH _3\right)_4\right]^{+2}: Cu ^{+2} \Rightarrow$ one unpaired electron : paramagnetic
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