Chemistry
Grade-9
Easy
Question
Elements mainly used by Mendeleev to study chemical properties are:
- Hydrogen and Sodium
- Hydrogen and Oxygen
- Sodium and oxygen
- Sodium and chlorine
Hint:
The first element and the eight element was used.
The correct answer is: Hydrogen and Oxygen
The correct option is b)Hydrogen and Oxygen.
Most elements react with oxygen and hydrogen, so the elements Mendeleev chose were oxygen and hydrogen. The physical property he used was the atomic weight of the element. The chemistries he used were those of the oxides and hydrides formed. That is, the analogy of chemical properties was used by him.
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