Chemistry · 2020
JEE Main · 9 January 2020, Shift 2 · Q37
The correct order of the spin-only magnetic moments of the following complexes is: (I) [ Cr ( H_2 O )_6] Br_2 (II) Na_4[ Fe ( CN )_6] (III) Na_3[ Fe…
The correct order of the spin-only magnetic moments of the following complexes is :
(I)
$\displaystyle \left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Br}_2$
(II)
$\displaystyle \mathrm{Na}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]$
(III)
$\displaystyle \mathrm{Na}_3\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]\left(\Delta_0>\mathrm{P}\right)$
(IV)
$\displaystyle \left(\mathrm{Et}_4 \mathrm{~N}\right)_2\left[\mathrm{CoCl}_4\right]$
Official answer
(2)
(I) > (IV) > (III) > (II)
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JEE Main 2020 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.