Chemistry · 2026
JEE Main · 2 April 2026, Shift 2 · Q70
Among Fe^2+, Fe^3+, Cr^2+ and Zn^2+, the ion that shows positive borax bead test and with highest ionisation enthalpy is:
Among $\displaystyle \mathrm{Fe}^{2+}, \mathrm{Fe}^{3+}, \mathrm{Cr}^{2+}$ and $\displaystyle \mathrm{Zn}^{2+}$, the ion that shows positive borax bead test and with highest ionisation enthalpy is :
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle \mathrm{Fe}^{3+}$
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.