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JEE MAIN 2019
08-04-2019 S1
Question
The correct order of the spin-only magnetic moment of metal ions in the following low-spin complexes, $\left[\mathrm{V}(\mathrm{CN})_6\right]^{4-},\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-},\left[\mathrm{Ru}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ and $\left[\mathrm{Cr}\left(\mathrm{NH}_3\right)_6\right]^{2+}$, is:
Select the correct option:
A
$\mathrm{V}^{2+}>\mathrm{Cr}^{2+}>\mathrm{Ru}^{3+}>\mathrm{Fe}^{2+}$
B
$\mathrm{Cr}^{2+}>\mathrm{V}^{2+}>\mathrm{Ru}^{3+}>\mathrm{Fe}^{2+}$
C
$\mathrm{V}^{2+}>\mathrm{Ru}^{3+}>\mathrm{Cr}^{2+}>\mathrm{Fe}^{2+}$
D
$\mathrm{Cr}^{2+}>\mathrm{Ru}^{3+}>\mathrm{Fe}^{2+}>\mathrm{V}^{2+}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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