Q15 / 90 · JEE Main 2011 · Chemistry

The magnetic moment (spin only) of $\left[\mathrm{NiCl}_4\right]^{2-}$ is

  • A
    $5.46 \mathrm{BM}$
  • Correct answer
    B
    $2.83 \mathrm{BM}$
  • C
    $1.41 \mathrm{BM}$
  • D
    $1.82 \mathrm{BM}$

Solution

In $\left[\mathrm{NiCl}_4\right]^{2-}, \mathrm{n}=2$ $\begin{aligned} \mu & =\sqrt{n(n+2)} \mathrm{BM} \\ & =\sqrt{2(2+2)}=2.82 \mathrm{BM}\end{aligned}$

Hence, the correct answer is option: 'B'.

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