WHY DO WE NEED TO CLASSIFY ELEMENTS ?
GENESIS OF PERIODIC CLASSIFICATION
MODERN PERIODIC LAW AND THE PRESENT FORM OF THE PERIODIC TABLE
NOMENCLATURE OF ELEMENTS WITH ATOMIC NUMBERS 100
ELECTRONIC CONFIGURATIONS OF ELEMENTS AND THE PERIODIC TABLE
ELECTRONIC CONFIGURATIONS AND TYPES OF ELEMENTS: s-, p-, d-, f- BLOCKS
PERIODIC TRENDS IN PROPERTIES OF ELEMENTS