Which does not give borax bead test?

Options

A. `Cr^(3+)`
B. `Cu^(2+)`
C. `Mn^(2+)`
D. `Pb^(2+)`

Explanation

`Pb^(2+)` is colourless and borax bead test is given by coloured ion such as `Cu^(2+),Mn^(2+),Fe^(2+)` etc.