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Johann Dobereiner gave the idea of trend...

Johann Dobereiner gave the idea of trends among the physical and A… of several groups of three elements. Here, a referes to

A

atomic number

B

atmic mass

C

chemical properties

D

electric configuration

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Johann Dobereiner in early 1800's was the first to consider the idea of trends among properties of elements. By 1829 he noted a similarity among the physical and chemical properties of several groups of three elements (triads).
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BITSAT GUIDE-PERIODIC PROPERTIES-Practice Exercise
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  2. Johann Dobereiner gave the idea of trends among the physical and A… of...

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  3. Lother Meyer plotted the physical properties such as atomic volume, me...

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  4. Lother Meyer drew a graph showing the relation between

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  5. Which of the following is incorrect explanation about Mendeleef's peri...

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  6. Which basic concept was used by Mendeleef for organishing the elements...

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  7. Which element was named as eka-silicon in Mendeleef classification of ...

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  8. The statement that is not correct for the periodic classification of e...

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  9. The period number in the long form of the periodic table is equal to

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  10. Which of the following is incorrect ?

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  11. Match the Column I with Column II and select the correct answer by giv...

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  12. Observe the following statements, I. The physical and chemical prope...

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  13. There are 10 neutrons in the nucleus of the element (Z)M^(19) . It bel...

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  14. The third alkaline earth metal ion contains number of electrons and pr...

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  15. A metal having electronic configuration 1s^(2), 2s^(2)2p^(6), 3s^(2)...

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  16. Which of the following orbitals are in the process of filling in the 6...

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  17. The configuration to second excited state of the element is (O) electr...

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  18. The element having atomic number 33 lies in the group

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  19. General configuration of outermost and penultimate shell is (n - 1) s^...

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  20. Generally, the valency of noble gases is

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