mendeleev arranged the elements by what physical property?\nboiling point\natomic mass\ndensity\natomic number

mendeleev arranged the elements by what physical property?\nboiling point\natomic mass\ndensity\natomic number
Answer
Brief Explanations:
Mendeleev arranged elements in his periodic table based on their increasing atomic mass. Later, the periodic table was re - arranged by atomic number. But Mendeleev used atomic mass.
Answer:
atomic mass