Entrancei

LANTHANIDES  The f-block elements consist of two series of inner transition elements i.e. lanthanides and actinides. They are also called rare earth elements. Lanthanides involve the filling of 4f-orbitals while actinides involve the filling of 5f-orbitals in their atoms. These f-orbitals belong to the shell third from the outer shell. This factor accounts for some … Continue reading LANTHANIDES 

                    SOME IMPORTANT OBSERVATIONS DURING QUALITATIVE ANALYSIS     List of different coloured salts Salts Colour Copper salts Bluish green Nickel salts Greenish blue Chromium salts Dark green Cobalt salts Pinkish or purple Manganese salts Light pink Ferrous salts Light green Ferric salts Pale yellow Mercury … Continue reading SOME IMPORTANT OBSERVATIONS DURING QUALITATIVE ANALYSIS

GENERAL CHARACTERISTICS OF d–BLOCK ELEMENTS Metallic Character: All the transition elements are metallic in nature. They have tendency to form strong covalent bonds due to partially filled d subshell (except Zn, Cd, Hg) as well as strong metallic bond due to large number of electrons to be lost. So their melting and boiling points are … Continue reading GENERAL CHARACTERISTICS OF d-BLOCK ELEMENTS