Question

Mendeléev classification was based upon element’s:​

Answer 1

Answer:

Mendeléev arranged the elements based on their (elements) fundamental property, the atomic mass, as well as on the similarity of chemical properties. During the Mendeleev's time, only 63 elements were known. Mendeléev's Periodic Table consists of vertical columns known as 'groups' and horizontal rows known as 'periods.