D And F Block Elements

Assertion : Out of \(\mathrm{CrO}_3\) and \(\mathrm{Al}_2 \mathrm{O}_3, \mathrm{CrO}_3\) having lower melting point than \(\mathrm{Al}_2 \mathrm{O}_3\).

Reason : Oxidation state of \(\mathrm{Cr}\) in \(\mathrm{CrO}_3\) is high.