Lanthanide Contraction

d - Block Elements|Lanthanide Contraction|Ionic Radius|Comparion Of Ionic Radii With Atomic Radii|Variation Of Ionic Size Among Isoelectronic Ions|Ionization Enthalpy|Successive Ionization Enthalpies|Factors Affecting Ionization Enthalpy|Nuclear Charge|Atomic Size|Penetration Effect Of The Electrons|Questions|Shielding Or Screening Effect Of The Inner Shell Electrons|Electronic Configuration|Variation Of Ionization Enthalpy In Period|Explanation|Variation Along Group

Lanthanides contraction cause.

(a). Chemistry of all the lanthanoids is quite similar. (b). The actinide contraction differs from lanthanide contraction? Explain (c). A serious accident occurred in a chemistry laboratory when a student tried to dissolve excess of KMnO_4 in conc. H_2SO_4 .