Which of the following is a physical property that Mendeleev used

Subject : Chemistry

Question: Which of the following is a physical property that Mendeleev used to design the periodic table?

A) Atomic weight

B) Guidation state

C) Reactivity with metals

D) Crystalline structure

Expert Verified Solution:

The correct answer is:

Atomic weight

Dmitri Mendeleev used atomic weight (now known as atomic mass) as a key criterion in arranging elements in his periodic table. He organized elements by increasing atomic weight and noticed that elements with similar chemical properties occurred at regular intervals