Yes Dobereiner’s triads also exist in the columns of Newland’s law of octaves. In Newland’s Periodic table in the second column lithium, sodium and potassium are present. Starting with lithium as the first element, the eighth element will be sodium. According to Newland’s law of octaves the properties of every 8^th element should be similar to the properties of the first element. So, properties of lithium and sodium should be same. Also, if we start from sodium as the first element, then potassium is the eighth element so their properties should also be similar. Hence, according to Newland’s law of octaves, lithium, sodium and potassium have similar chemical properties. It is also known to us that lithium, sodium and potassium form a Dobereiner’s triad. Hence, we can conclude that Dobereiner’s triads also exist in the columns of Newlands octaves.