1.

Match the columns:Column IColumn II(1) Dobereiner(a) Atomic number(2) New lands(b) Triads(3) Moseley(c) Atomic mass(4) Mendeleev(d) Octaves(e) Sodium

Answer»

(1) Dobereiner – Triads 

(2) Newlands – Octaves 

(3) Moseley – Atomic number 

(4) Mendeleev – Atomic mass.



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