Question

The position of the elements that were misfits on the basis of mass number could be justified on the basis of:

• A. Charge
• B. Electronic configuration
• C. Atomic number
• D. All of above

Answer 1

The correct option is C Atomic number

The classification of elements is based on the atomic number, which is a more fundamental property. The position of the elements that were misfits on the basis of mass number (anomalous pairs like argon and potassium) could be justified on the basis of atomic number.