Periodic classification of elements: class 10th question and answer science and technology
2.1 Elements and their classification2.2 Dobereiner’s Triads2.3 Newlands Law of OctavesCHAPTER OUTLINE2.4 Mendeleev’s Periodic Table2.5 Modern Periodic Table Q.1 Fill in the blanks :(1) Using Dobereiner’s law of triads, find theLi Na K7′39(2) In the Mendeleev’s periodic table, properties ofelements are periodic function of their .(3) The vertical columns in the Mendeleev’speriodic table are calledmissing […]