1.

How many of the following cation belongs to group IIA,III,IV and V only Hg_(2)^(2+),Pb^(2+),Sb^(3+),Mg^(2+),As^(3+),Cu^(2+),Cr^(3+),Cr^(3+),Zn^(2+),Sn^(2+)

Answer»


Answer :4
`Pb^(2+),CU^(2+),CR^(3+),Zn^(2+)`


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