Explain why $Cu ^{+}$ ion is not stable in aqueous solutions?
In an aqueous medium, $Cu ^{2+}$ is more stable than $Cu ^{+}$. This is because although energy is required to remove one electron from $Cu ^{+}$ to $Cu ^{2+}$, high hydration energy of $Cu ^{2+}$ compensates for it. Therefore, $Cu ^{+}$ ion in an aqueous solution is unstable. It disproportionates to give $Cu ^{2+}$ and $Cu$.
$2Cu_{(aq)}^ + \to Cu_{(aq)}^{2 + } + C{u_{(s)}}$
Magnetic moment $2.83\, BM$ is given by which of the following ions ?
(At. nos. $Ti = 22,\,Cr = 24,$ $ Mn = 25,\,Ni = 28$)
Mercury is a liquid at $0\,^o C$ because of
Which of the following ions form most stable complex compound[
In the ground state of cobalt atom $(Z = 27)$ there are ....... unpaired electrons and thus the atom is.......