What is the type of magnetic behavior and geometry respectively in Cuproammonium sulphate (Atomic no. of…

What is the type of magnetic behavior and geometry respectively in Cuproammonium sulphate (Atomic no. of $\mathrm{Cu}=29$ )?
  1. Paramagnetic and tetrahedral
  2. Diamagnetic and pyramidal
  3. Diamagnetic and tetrahedral
  4. Paramagnetic and square planar

Solution

Cuproammonium sulphate $-\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4} . \mathrm{H}_{2} \mathrm{O}$ $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \rightarrow$ Oxidation state of $\mathrm{Cu}=+2$
$\mathrm{dsp}^{2}$ - Square planar, Paramagnetic - One unpaired electron.

Asked in: MHT CET 2020 (15 Oct Shift 1)

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