The hydroxide of which metal ion(s) is/a...

The hydroxide of which metal ion(s) is/are soluble in excess of NaOH solution

A

`Al^(3+)`

B

`Zn^(2+)`

C

`Fe^(3+)`

D

`Cu^(2+)`

Verified by Experts

The correct Answer is:

A, B, C

`3AI+2NaOHrarr2NaAIO_(2)+H_(2)`
`Zn+2NaOHrarrNa_(2)Zn_(2)_+H_(2)`

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