Question

Which physical property was used by mendeleev for classifying elements

Answer 1

Mandeleeve use atomic mass of the elements to arrange the elements in increasing order of their atomic masses.
He also classify elements on the basis of their state ,colour,odour,MP and BP.
Hole this will help u..

Answer 2

the physical properties used by the medeleev
for classifying the elements was the melting and it's boiling point.
I hope this answer will help you