D And F Block Elements

The green manganate ion shows diamagnetic nature but the permanganate ion exhibits paramagnetic nature

Interstitial compounds of transition metals have lower melting points than that of pure transition metals and their compounds are chemically reactive

Cerium is a lanthanoid metal which exists in a stable oxidation state of +4 , besides exhibiting an oxidation state of +3

\(\mathrm{Cr}(\mathrm{VI})\) is more stable than \(\mathrm{W}(\mathrm{VI})\) and hence acts as a good oxidising agent