Question

What is the primary atomic characteristic that Mendeleev used to organize the periodic table?

Answer 1

Atomic number is the answer

Answer 2

Atomic mass is the primary atomic characteristic that Mendeleev used to organize the periodic table.

 

The atomic mass (ma) is the mass of an atomic particle, sub-atomic particle, or molecule. It is commonly expressed in unified atomic mass units (u) where by international agreement, 1 unified atomic mass unit is defined as 1/12 of the mass of a single carbon-12 atom (at rest).

 

The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.