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Genesis of Periodic Classification

Classification of Elements and Periodicity in Properties
Chemistry
Class 11

Overview

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Dobereiner's Triads

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Newlands' Law of Octaves

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Lothar Meyer's Arrangement of Elements

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Classification of Elements According to Mendeleev

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Related questions

Why did Mendeleev's leave some gaps in his periodic table of elements? Explain your answer with an example.

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Write short notes on :

Lother Meyer's curve. 

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Example of Dobereiner's triad is _________.

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Mendeleev corrected the atomic weight of :

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In Lothar Meyer's plot, the position at the peaks are occupied by:

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Cl, Br, I  follows Dobereiner's triads, the atomic masses of Cl and I are 35.5 and 127 respectively. The atomic mass of Br is : 

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At the time of Newlands, how many elements were known?

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The law used by Newland to arrange elements is known as ___________.

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Name two elements whose properties were predicted on the basis of their positions in Mendeleev's periodic table.

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Mendeleev used a Sanskrit numeral before the names of the predicted elements. What was the term used for it?

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