Select three metals that can show disproportionation reaction .

Explanation

Three metals that can show disproportionation reaction are copper ,gallium and mangenese.
`overset(+1)(2Cu^(+))(Aq)tooverset(0)(Cu(s))+overset(+2)(Cu^(2+))(aq)`
ii`overset(+1)(3Ga^(+))(aq)tooverset(+3)(Ga^(3+))(aq)+overset(0)(2G)a(s)`
iii`2Mn^(3+)(aq)+2H_(2)O(l)toMnO_(2)(s)+Mn^(2+)(aq)+4H^(+)(aq)`