#1-PERIODIC TABLE|DEVELOPMENT OF PERIODIC TABLE|IIT ADVANCED|JEE MAIN|CHEMISTRY CLASS 11|OLYMPIAD

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Topics covered in this video by alok kumar ALK sir kota famous faculty are:

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Topics covered in this lecture with timestamp :
00:00 Classification of Elements and Periodicity in Properties: Introduction to the organization of elements based on their properties and the periodic trends observed in the periodic table.
02:22 Dobereiner's Law of Triads: Johann Wolfgang Döbereiner's observation of triads, where elements with similar properties could be grouped into sets of three.
07:23 Newlands' Law of Octaves: John Newlands' attempt to classify elements by arranging them in increasing atomic weights and noticing that every eighth element exhibited similar properties, akin to the octaves in music.
10:28 Drawbacks of Newlands' Law of Octaves.
12:50 Lother-Meyer Curve: A graphical representation of periodic properties discovered by Julius Lother Meyer that showed periodic trends when elements were plotted against atomic volume.
19:53 Drawbacks of Lother-Meyer Curve.
20:28 Mendeleev's Periodic Table: Mendeleev's creation of the periodic table, where elements were arranged by increasing atomic weights while maintaining periodic properties and leaving gaps for undiscovered elements.
23:55 Merits of Mendeleev's Periodic Table.
26:36 Drawbacks of Mendeleev's Periodic Table: Despite its predictive power, Mendeleev's table did not fully adhere to atomic weights and had some inconsistencies.
32:08 Mendeleev's Periodic Law: The principle proposed by Mendeleev stating that the properties of elements are a periodic function of their atomic weights or atomic numbers.

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