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Q.

The telluric helix was given by:

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a

De-chancourtois

b

Mendeleev

c

Newland

d

Lothar Meyer

answer is D.

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Detailed Solution

The first attempt to represent the Periodic system graphically was the Telluric Helix (Vis Tellurique) presented in 1862 by Alexandre-Emile Béguyer de Chancourtois, in which, the sequence of elements was wound round a cylinder.

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