List of top Chemistry Questions on d And f - Block Elements asked in PSEB XII

How many unpaired electrons are present in Fe$^{+3}$, Zn$^{+2}$ and Mn$^{+2}$ ?
Explain why Cu$^{+2}$ salts are coloured while Zn$^{+2}$ salts are colourless ?
Give three differences between Lanthanoids and Actinoids.
Transition metals form alloys with other metals. Explain.
Why do Zr and Hf exhibit similar properties ?
Write down two similarities between lanthanoids and actinoids.