`X` and `Y` are the two elements having similar properties which obey Newland's law of octaves. How many elements are there in between `X` and `Y`?

Write newland's law of octaves for classification of elements.

For which elements, Newlands' law of octaves is not applicable?

For which elements, Newlands' law of octaves is not applicable?

Newland's law of octave applies to which of the following set elements ?

Newland's law of octave applies to which of the following set elements ?

Explain classification of elements based on Newland 's law of Octaves.

According to Newlands' classification of elements, the properties of element B are similar to element A. (i) How many elements are there between A and B? (ii) Starting from A, what is the position of B?

On which, Newlands' law of octaves is based? For which elements it is not applicable?