Question

In the modern periodic table, the elements are arranged on the basis of their increasing:

• A. Atomic mass
• B. Atomic number
• C. Charge on their ions
• D. Mass number

Answer 1

The correct option is B

Atomic number

Elements, when arranged in order of increasing atomic number, lead us to the classification known as the modern periodic table. The chemical and physical properties of the elements vary periodically when the elements are arranged in the order of their atomic numbers.