Which of the following cations form(s) b...

Which of the following cations form(s) black precipitate(s) with `H_(2)S (g)` ?

A

`Cu^(2+)`

B

`Sb^(3+)`

C

`Pb^(2+)`

D

`Bi^(3+)`

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The correct Answer is:

A,C,D

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