Question

how did the work of dmitri mendeleev differ from that of john newlands in the development of the periodic table? mendeleev arranged the elements according to increasing atomic mass. mendeleev predicted elements that would later be discovered. mendeleev identified elements that had similar properties. mendeleev organized elements into triads based on their properties.

Explanation:

Mendeleev left gaps in his periodic table for elements yet - to - be - discovered, which was a unique feature compared to Newlands' work. Newlands did not predict new elements in such a forward - looking way. Arranging elements by atomic mass was done by both to some extent. Identifying elements with similar properties was also a common aspect in the development of the periodic table by multiple scientists. Organizing elements into triads was an earlier concept not mainly associated with Mendeleev.

Answer:

Mendeleev predicted elements that would later be discovered.