Question

According to Modern periodic law, the properties of elements are the periodic functions of 'X' ; Identify 'X'.
A) Atomic masses of elements. B) Atomic volumes of elements. C) Atomic numbers of elements. D) Densities of elements.

Answer 1

C) Atomic number of elements

Answer 2

Systematic study of the elements.

2. Prediction of new elements and their properties. he left space for the elements yet to be discovered. e.g., he left spaces for Ga and Ge and named these elements as ERa-aluminium (Ga) and EKa-silicon (Ge) respectively

3. Atomic mass correction of doubtful elements on the basis of their expected positions and properties.