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

1.	The hydroxide of which metal ion(s) is/are soluble in excess of NaOH solution
Answer» `Al^(3+)` `ZN^(2+)` `FE^(3+)` `Cu^(2+)` Solution :`3AI+2NaOHrarr2NaAIO_(2)+H_(2)` `Zn+2NaOHrarrNa_(2)Zn_(2)_+H_(2)`

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