JEE MAIN - Chemistry (2024 - 31st January Evening Shift - No. 11)
Select the option with correct property -
$$\left[\mathrm{Ni}(\mathrm{CO})_4\right]$$ and $$\left[\mathrm{NiCl}_4\right]^{2-}$$ both Paramagnetic
$$\left[\mathrm{Ni}(\mathrm{CO})_4\right]$$ and $$\left[\mathrm{NiCl}_4\right]^{2-}$$ both Diamagnetic
$$\left[\mathrm{NiCl}_4\right]^{2-}$$ Diamagnetic, $$\left[\mathrm{Ni}(\mathrm{CO})_4\right]$$ Paramagnetic
$$\left[\mathrm{Ni}(\mathrm{CO})_4\right]$$ Diamagnetic, $$\left[\mathrm{NiCl}_4\right]^{2-}$$ Paramagnetic
Explanation
$$\left[\mathrm{Ni}(\mathrm{CO})_4\right] \rightarrow$$ diamagnetic, $$\mathrm{sp}^3$$ hybridisation, number of unpaired electrons $$=0$$
$$\left[\mathrm{NiCl}_4\right]^{2-}, \rightarrow$$ paramagnetic, $$\mathrm{sp}^3$$ hybridisation, number of unpaired electrons $$=2$$
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