Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 7. Periodic Classification of Element
Modern Periodic Table
Modern Periodic Table : Henry Moseley, an English physicist found that the atomic number (Z) was the fundamental property of an elements and not the atomic mass for classification of elements. Modern Periodic Law : ‘‘Properties of elements are periodic functions of their atomic numbers, i.e., the number of protons or electrons present in the neutral atom of an element.’’