Q.

Newlands' table, the elements were placed with the halogens -

A. Mn and As
B. Fe and Se
C. Ce and La
D. Co and Ni
Answer» D. Co and Ni
Explanation: Newlands' Law of Octaves suffered from lot of limitations, In order to fit elements into his table, Newlands ad justed two elements in the same slot, but also put some unlike elements under the same note.
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