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QJEEM23Chcb83: JEE Main 2023 Chemistry - Class 12 JEEM23Chcb83 Solution: The number of paramagnetic species from the following is…

The number of paramagnetic species from the following is _____________.

[Ni(CN)4]2−,[Ni(CO)4],[NiCl4]2−\mathrm{{[Ni{(CN)_4}]^{2 - }},[Ni{(CO)_4}],{[NiC{l_4}]^{2 - }}}

[Fe(CN)6]4−,[Cu(NH3)4]2+\mathrm{{[Fe{(CN)_6}]^{4 - }},{[Cu{(N{H_3})_4}]^{2 + }}}

[Fe(CN)6]3− and [Fe(H2O)6]2+\mathrm{{[Fe{(CN)_6}]^{3 - }}\,and\,{[Fe{({H_2}O)_6}]^{2 + }}}

Step-by-Step Verified Solution

 Species amp; Magnetic property [Ni(CN)4]2−amp; Diamagnetic [Ni(CO)4]amp; Diamagnetic [NiCl]4]2−amp; Paramagnetic [FeCN)6]4−amp; Diamagnetic [Fe(CN)6]3−amp; Paramagnetic Fe(H2O)6]2+amp; Paramagnetic [Cu(NH3)4]2+amp; Paramagnetic \begin{array}{ll}\text { Species } & \text { Magnetic property } \\\\{\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}} & \text { Diamagnetic } \\\\{\left[\mathrm{Ni}(\mathrm{CO})_4\right]} & \text { Diamagnetic } \\\\\left.[\mathrm{NiCl}]_4\right]^{2-} & \text { Paramagnetic } \\\\\left.[\mathrm{FeCN})_6\right]^{4-} & \text { Diamagnetic } \\\\{\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}} & \text { Paramagnetic } \\\\\left.\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+} & \text { Paramagnetic } \\\\{\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right]^{2+}} & \text { Paramagnetic }\end{array}

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