- The transition metals are hard and tough. They have low volatility butZn, Cd and Hg are an exception.
- They have high melting and boilingpoints due to the greaterquantity of electrons from (n-1) d along with the ns electrons metallic
Fig. The trends in melting point of d-block elements.
- Metals possessing high boiling point are noble in their
- The metals belonging to second and third series have greater enthalpies ofatomisation than the elements belonging to first series.
Fig. Enthalpies of atomisation