The uncertainty in the momentum of an electron is $$2.0 \times 10^{-8} \mathrm{~kg} \mathrm{~ms}^{-1}$$. The uncertainty in its position will be
A metal has bcc structure and the edge length of its unit cell is $$8 \mathop A\limits^o$$. The volume of the unit cell ( in $$\mathrm{cm}^3$$) will be
$$\mathrm{MnO}_4^{-}$$ is good oxidising agent in different medium changing to
$$\mathrm{MnO}_4^{-} \rightarrow \mathrm{Mn}^{2+} \rightarrow \mathrm{MnO}_4^{2-} \rightarrow \mathrm{MnO}_2 \rightarrow \mathrm{Mn}_2 \mathrm{O}_3$$
Change in oxidation number respectively are :
In the reaction, $$\mathrm{H}_2+\mathrm{I}_2 \rightleftharpoons 2 \mathrm{HI}$$. In a 4L flask, 0.8 mole of each $$\mathrm{H}_2$$ and $$\mathrm{I}_2$$ are taken. All equilibrium, 1 mole of $$\mathrm{HI}$$ is formed. What will be the value of equilibrium constant $$K_C$$ ?