In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?
(i) [FeF₆]^3
(ii) [Co(NH₃)₆]³⁺
(iii) [NiCl₄]^2
(iv) [Cu(NH₃)₄]²⁺
JEE Main 2021 · 25 Feb, Evening shift · Q730