Which of the following ions cannot be detected by the borax bead or microcosmic bead test?

CHEMISTRY · Single correct · CBSE · Chemistry · d- and f-Block Elements · d- and f-Block Elements

Problem

Which of the following ions cannot be detected by the borax bead or microcosmic bead test? (1)

\text{Cu}^{2+}

(2)

\text{Cr}^{3+}

(3)

\text{Fe}^{3+}

(4)

\text{Zn}^{2+}