The catalytic activity of transition elements is related to their
variable oxidation states
surface area
complex formation ability
All of the above
Which of the following pair of transitional elements exhibit highest and lowest density
Which of the following compounds is not coloured ?
The correct formula of permanganic acid is
Consider the hydrated ions of $Ti^{2+}, V^{2+}, Ti^{3+}$ and $Sc^{3+}$. The correct order of their spin-only magnetic moments is
Which is a stronger reducing agent $Cr ^{2+}$ or $Fe ^{2+}$ and why?