Question

State two main properties of elements on which Mendeleev periodic table was based. pls answer ASAP..

Answer 1

Mendeleev arranged the elements on an increasing order of their atomic no. there is 7 periods and 18 groups in the Mendeleev periodic table

Answer 2

Elements were organised on the basis of oxides and hydrides, this formulation also helped in the arrangement of elements on the basis of increasing atomic masses...he also left the gaps for undiscovered elements whose propreties were boldy perdicted by him..

Hope you understood this...;)