Question

According to modern periodic table, the properties of elements are a periodic function of their:

• A. Atomic number
• B. Atomic weight
• C. Mass number
• D. All of the above

Answer 1

The correct option is A Atomic number

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