Question

how was the work of newlands similar to that of mendeleev on the periodic table? they both arranged the elements in order of increasing atomic mass. they both arranged elements that had similar properties into groups. they both predicted the positions of undiscovered elements on the table. they both placed the relative atomic mass of each element on the table.

Explanation:

Newlands and Mendeleev both arranged elements in order of increasing atomic mass when constructing the periodic - table. Newlands' Law of Octaves arranged elements with similar properties in a certain pattern based on atomic mass, and Mendeleev also arranged elements in order of increasing atomic mass and grouped elements with similar chemical properties together. Predicting undiscovered elements was mainly Mendeleev's contribution. Placing relative atomic mass on the table is not the most significant similarity.

Answer:

They both arranged the elements in order of increasing atomic mass.