Which of the following is correct order of ligand field strength?
Held on 30 Jan 2023 · Verified 6 Jul 2026.
CO<en<NH3<C2O42−<S2−
S2−<C2O42−<NH3<en<CO
NH3<en<CO<S2−<C2O42−
S2−<NH3<en<CO<C2O42−
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First and second ionization enthalpies of lithium are $520$ kJ mol$^{-1}$ and $7297$ kJ mol$^{-1}$ respectively. Energy required to convert $3.5$ mg lithium (g) into $\text{Li}^{2+}$(g) $[\text{Li(g)} \rightarrow \text{Li}^{2+}\text{(g)}]$ is _______ kJ mol$^{-1}$. (nearest integer) [Molar mass of Li $= 7$ g mol$^{-1}$]
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