Question

Which group of elements was missing from mendeleev's periodic table as compared to the modern periodic table

Answer 1

I think 18group element s

Answer 2

In mendeleev table the position lanthanoids and acitanoidsare determined and also the position of hydrogen

Gallium and germanium are discovered later

Thanx

Answer 3

In mendeleev table the position lanthanoids and acitanoidsare determined and also the position of hydrogen

Gallium and germanium are discovered later

Thanx

Answer 4

In mendeleev table the position lanthanoids and acitanoidsare determined and also the position of hydrogen

Gallium and germanium are discovered later

Thanx

Answer 5

In mendeleev table the position lanthanoids and acitanoidsare determined and also the position of hydrogen

Gallium and germanium are discovered later