Which of the following compound expected to be colourless
$ScO$
${V_2}{O_3}$
$CuCN$
$C{r_2}{(S{O_4})_3}$
Which of the following is not a transition metal?
When $Cu^{2+}$ ion is treated with $KI$, a white precipitate is formed. Explain the reaction with the help of chemical equation.
The melting point of $Zn$ is lower as compared to those of the other elements of $3d$ series because
Calculate the number of unpaired electrons in the following gaseous ions: $Mn ^{3+}, Cr ^{3+}, V ^{3+}$ and $T i^{3+} .$ Which one of these is the most stable in aqueous solution?
The ${E^\Theta }\,\left( {{M^{2 + }}/M} \right)$ value for copper is positive $(+0.34 \,V ) .$ What is possible reason for this? (Hint: consider its high $\Delta_{ a } H^{\theta}$ and low $\Delta_{ hyd } H^{\theta}$ )