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Class 11 Chemistry Practice Test: Classification of Elements and Periodicity in Properties - Genesis of Periodic Classification
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Dimitri Mendeleev, a Russian chemist, began developing the periodic table in 1869, which organises chemical elements by atomic mass.

Class 11 Chemistry Practice Test: Classification of Elements and Periodicity in Properties - Genesis of Periodic Classification
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10 Questions

1. The property of every eight elements is similar to that of the 1st element. This is proposed by ___________
2. Newland’s law of Octaves is only valid until calcium.
3. What are the atomic weights of Aka Silicon and Germanium?
4. Eka Aluminium is _________
5. Which of the following is not Dobereiner triad?
6. __________ gave the idea for the first time to classify elements as per their properties.
7. The ideal gases were in ____ group of Mendeleev’s periodic table.
8. The periodic functions of the __________ are the properties of respective elements.
9. In Mendeleev’s periodic classification, what is the number of groups?
10. In triads, the average weight of the 1st and the 3rd element are equal to the second one.

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