Did Dobereiner's triads also exist in the columns of Newlands' octaves ? Compare and find out.

Explanation

To determine whether Dobereiner's triads exist in the columns of Newlands' octaves, we can follow these steps:

### Step 1: Understand Dobereiner's Triads
Dobereiner's triads are groups of three elements that exhibit similar chemical properties, where the atomic mass of the middle element is approximately the average of the atomic masses of the other two elements.

### Step 2: Understand Newlands' Octaves
Newlands' octaves classify elements in a way that every eighth element has similar properties. This was based on the observation that elements with similar properties appeared at regular intervals when arranged by increasing atomic mass.

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