Jee MainD And F Block ElementsJEE Main 2023 (Online) 30th January Evening ShiftMCQ+4 / -12023ENHIFormulae for Nessler's reagent is :A$\mathrm{KHgI}_3$B$\mathrm{HgI}_2$C$\mathrm{KHg}_2 \mathrm{I}_2$D$\mathrm{K}_2 \mathrm{HgI}_4$Check AnswerClear SelectionReveal AnswerShow Explanation