Question

Which one of the following was the earliest attempt of classification of elements?(a) Classification of elements into metals and non-metals(b) Newlands’ Law of Octaves(c) Dobereiner’s Triads(d) Mendeleef’s Periodic Table

Answer 1

the following is the order -

1 . classification into metals and non metals

2. dobereiners triads

3 . Newlands law of Octaves

4 . Mendeleev periodic table

THE IUPAC IS BASED ON MENDELEEV TABLE

HOPE IT HELPS

PLZ MARK BRANLIEST