Question

Which one is the correct statement ?
1
Mendeleev's periodic law is based on
atomic numbers of the elements
'Law of octaves' was proposed by
2
Döbereiner.
In the original Mendeleev periodic table,
the elements were classified on the basis
3
of their atomic masses.
4 'Law of triads' was proposed by Newland​

Answer 1

Answer:

3.In the original Mendeleev periodic table,the elements were classified on the basis of their atomic masses.