Question

why modern periodic table accept and who gave it?​

Answer 1

Answer:

the atomic number (Z) was the fundamental property of an element and not the atomic mass for classification of element

Answer 2

Answer:

Dimitri mendeleev gave modern periodic table

modern periodic is accepted because -

1. atomic no of an element is more fundamental property than its atomic mass

2. the properties of elements are a periodic function of atomic number.