Which of the following statements is not correct about $Cu^{2+}$, and $Cu^+$
$Cu^{2+}$ is more stable than $Cu^+$ in aq solution
$Cu^{2+}$ is paramagnetic, $Cu^+$ is diamagnetic
$Cu^{2+}$ is mostly blue, whereas $Cu^+$ is colourless
Both $Cu^+$ and $Cu^{2+}$ are stable with $F^-$
$Sc\, (Z = 21)$ is a transition element but $Zn\, (Z = 30)$ is not because
The melting point of $Zn$ is lower as compared to those of the other element of $3d$ series because
The correct order of the first ionization enthalpies is
Which $d-$ block element is expected to have highest enthalpy of atomisation, among the following ?
Pair of ions which gives blue colour in aqueous state :
$V^{+4},\,Ni^{+2},\, Ti^{+3}, \,Co^{+2}, \,Fe^{+3}, \,Cu^{+2}$