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A metal nitrate on reaction with KI give...

A metal nitrate on reaction with KI gives black precipitate and with excess KI gives orange solution. The metal ion is ,

A

`Hg^(2+)`

B

`Pb^(2+)`

C

`Cu^(2+)`

D

`Bi^(3+)`

Text Solution

Verified by Experts

`Bi(NO_3)_(3)+3KI to underset("Black ppt.")(BiI_(3))+3KNO_(3)`
`BiI_(3)+KI to underset("Orange solution")(K[BiI_(4)])`
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