The properties of Zr and Hf are similar because
Both have similar radii
Zr and Hf have similar radii, therefore they show similar properties.
A metal, M which is not affected by strong acids and strong bases but dissolves in aqua-regia forms MCl3 which is used for toning in photography. The metal M is
Transition elements exhibits variable valencies because they release electrons from the following orbits
The transition elements are more metallic than the representative elements because they have
Which forms interstitial compounds?
Permanent magnets are generally made of alloys of
Which oxide of manganese is amphoteric?
Among the following pair of ions, the lower oxidation state in aqueous solution is more stable in
Purple of cassius is
By annealing, steel
Carbon in wrought iron is present as