Question

State two criteria mendeleev used to classify the elements in his periodic table

Answer 1

Answer:

THE TWO CRITERIA MENDELEEV USED TO CLASSIFY THE ELEMENTS IN HIS PERIODIC TABLE ARE:-

1. HE CLASSIFIED THE ELEMENTS BY THEIR FORMULAE OF OXIDES.

eg. R2O, RO, R2O3, RO2

2. HE THEN CLASSIFIED THE ELEMENTS BY THEIR FORMULAE OF HYDRIDES.

eg. RH, RH2, RH3, RH4

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