Chemistry · 2021
JEE Main · 25 February 2021, Shift 2 · Q39
In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment? (i) […
In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment ?
(i)
$\displaystyle \left[\mathrm{FeF}_6\right]^{3-}$
(ii)
$\displaystyle \left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$
(iii)
$\displaystyle \left[\mathrm{NiCl}_4\right]^{2-}$
(iv)
$\displaystyle \left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right]^{2+}$
Official answer
(1)
(i) > (iii) > (iv) > (ii)
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JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.