The $CORRECT$ ionisation energy order is
$Zn^+ > Ca^+ > Cr^+$
$Co^{2+} > Mn^{2+} > Cr^{2+}$
$Mn^{2+} > Ni^{2+} > Ca^{2+}$
$Zn^+ > Cu^+ > Ni^+$
Which of the following ionic species will impart colour to an aqueous solution
Amalgams are
Which is not amphoteric
The catalytic activity of the transition metal and their compound is due to their
Explain why $Cu ^{+}$ ion is not stable in aqueous solutions?