This video lecture from Periodic Classification of Elements and Periodicity (F.Sc. second year Chemistry) covers:The groups and Periods in the Modern periodic table and the number of elements in each. It further discusses the various families like alkali metals,alkaline earth metals,halogens,transition elements(inner and outer alongwith actinides and lanthanides),noble gases and rare earth elements. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.