Among the following cations, the number of cations which will give characteristic precipitate in their identification tests with \({K}_{4}\left[Fe(CN{)}_{6}\right]\) is ______

\(C{u}^{2+},F{e}^{3+},B{a}^{2+},C{a}^{2+},N{H}_{4}^{+},M{g}^{2+},Z{n}^{2+}\)

[JEE Main 2025, 24 Jan (Shift 1)]

Question

Among the following cations, the number of cations which will give characteristic precipitate in their identification tests with \({K}_{4}\left[Fe(CN{)}_{6}\right]\) is ______

\(C{u}^{2+},F{e}^{3+},B{a}^{2+},C{a}^{2+},N{H}_{4}^{+},M{g}^{2+},Z{n}^{2+}\)

[JEE Main 2025, 24 Jan (Shift 1)]

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