Question

The modern periodic table is organized by?

A. Atomic number

B. Number of protons in each element

C. atomic weight

D. Chemical properties

Answer 1

Answer:

"A" Atomic number

Explanation:

The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number.

Answer 2

The actual answer is A. Atomic number, it originally was organized by atomic weight until proton was discovered.