Various precious metals such as silver, gold and
platinum and industrially important metals like iron,
copper and titanium belong to the transition metals series In this Unit, we shall first deal with the electronic
configuration, occurrence and general characteristics of
transition elements with special emphasis on the trends
in the properties of the first row (3d) transition metals
along with the preparation and properties of some
important compounds This will be followed by
consideration of certain general aspects such as electronic
configurations, oxidation states and chemical reactivity
of the inner transition metals THE TRANSITION ELEMENTS (d-BLOCK)
The d–block occupies the large middle section of the periodic table
flanked between s– and p– blocks in the periodic table