JEE MAIN - Chemistry (2024 - 4th April Morning Shift - No. 12)
The correct sequence of ligands in the order of decreasing field strength is :
$$\mathrm{NCS}^{-}>\mathrm{EDTA}^{4-}>\mathrm{CN}^{-}>\mathrm{CO}$$
$$\mathrm{CO}>\mathrm{H}_2 \mathrm{O}>\mathrm{F}^{-}>\mathrm{S}^{2-}$$
$$\mathrm{S}^{2-}>{ }^{-} \mathrm{OH}>\mathrm{EDTA}^{4-}>\mathrm{CO}$$
$${ }^{-} \mathrm{OH}>\mathrm{F}^{-}>\mathrm{NH}_3>\mathrm{CN}^{-}$$
Explanation
$$
\text { Field strength order : } \mathrm{CO}>\mathrm{H}_2 \mathrm{O}>\mathrm{F}^{-}>\mathrm{S}^{2-}
$$
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