"The properties of elements are periodic functions of their atomic weights." This periodic law was given by

Which scientist used atomic volume as the basis for the periodic classification of elements?

Who stated that the properties of elements are a periodic function of their atomic number?

Mendeleev's periodic law is based on

"The properties of the elements are a periodic function of their atomic numbers." This statement was given by:

Fill in the blanks given below:
$(i)$ The first scientist to think about the properties of elements was ......... .
$(ii)$ The relationship of properties of elements suggested by Dobereiner is known as ........... .
$(iii)$ The Law of Octaves was proposed by the chemist ......... .
$(iv)$ The first periodic table was constructed by .......... and .......... .