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(D) In the complex $[Cu(NH_3)_4]^{2+}$,the oxidation state of $Cu$ is $+2$.The electronic configuration of $Cu^{2+}$ is $[Ar] 3d^9$.According to $C.F.

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All of these

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(D) In the complex $[Cu(NH_3)_4]^{2+}$,the oxidation state of $Cu$ is $+2$.The electronic configuration of $Cu^{2+}$ is $[Ar] 3d^9$.According to $C.F.T.$ and valence bond theory,the $Cu^{2+}$ ion undergoes $dsp^2$ hybridisation to form a square planar geometry.Due to the presence of one unpaired electron in the $3d$ orbital,the complex is paramagnetic.Therefore,all the given statements are correct.

List-$I$	List-$II$
$A. \, Ni(CN)_5^{3-}$	$1. \, sp^3$
$B. \, CuCl_5^{3-}$	$2. \, dsp^2$
$C. \, AuCl_4^-$	$3. \, sp^3d_{z^2}$
$D. \, ClO_4^-$	$4. \, d_{x^2-y^2}sp^3$

Which of the following is/are correct for the complex $[Cu(NH_3)_4]^{2+}$?

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