State the applications of d and f-block elements and their compounds

Explanation

(i) In Steel or Iron: Iron and steel are the most important construction materials
Their production is based on the reduction of iron oxides, removal of impurities and the addition of carbon and alloying metals such as Cr, Mn and Ni
(ii) In Pigmentation : TiO is used in the pigment industry
(iii) In Batteries: The Manganese dioxide `(MnO_(2))` and Zinc are used in the preparation of dry battery cells whereas nickel and cadmium are used in the preparation of batteries
In Currency Coins: The elements of Group -11 are called ..Coinage Elements.. because they are precious
The Ag and Au are restricted to collection items and the contemporary UK .copper. coins are copper-coated stell
The .silver. UK coins are a Cu/Ni alloy
(v) As a Catalyst: The transition elements and their compounds are essential catalysts in the chemical industry
`V_(2)O_(5)` catalysis the oxidation of `SO_(2) " to " SO_(3)` in the manufacture of sulphuric acid
`TiCl_(4)` and `Al(CH_(3))_(3)` forms the basis of Zieglar-Natta catalysts used to manufacture polythene
In Haber.s process for the production of ammonia from `N_(2)//H_(2)` mixtures, iron catalyst is used
Nickel catalysts enable the hydrogenation of fats to proceed
In Wacker.s process, the oxidation of ethyne to ethanal is catalyzed by `PdCl_(2)`.
Nikel complexes are useful in the polymerization of alkynes and other organic compounds such as benzene
The photographic industry relies on the special light-sensitive properties of AgBr.