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What do you understand by Doberiner's tr...

What do you understand by Doberiner's traids? Give some examples to supprot it?

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MBD-PERIODIC CLASSIFICATION OF ELKHOENTS-EXAMPLE
  1. In the modern periodic table, calcium (atomic number20) is surrounded ...

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  2. Compare and contrast the arrangement of elements in mendeleev's period...

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  3. What do you understand by Doberiner's traids? Give some examples to su...

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  4. What was Doberiner's basis of clasifying elements?

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  5. Give a brief discussion of the Mendeleev's classification of the eleme...

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  6. Why do we classify elements?

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  7. What were the two criteria used by mendeleev in creating his periodic ...

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  8. Why did mendeleev leave some gaps in his periodic table?

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  9. In mendeleev's perodic table, why was there no mention of noble gases ...

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  10. Would you place the two isotopes of chlorine CI-35 and CI-37 because o...

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  11. How did mendeleev's periodic table help in the discovery of new elemen...

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  12. Discuss some major merits of the Mendeleev's periodic table

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  13. Point out the major defects in the mendeleev's periodic table?

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  14. Give a brief description of long form of periodic table?

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  15. What is periodicity? What is the cause of periodicity?

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  16. What were the two major shortcomings of meneleev's periodic table? How...

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  17. Two elements X and Y have atomic numbers 12 and 16 respectively. Write...

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  18. Why is long form of periodic table regarded better than mendeleev's?pe...

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  19. How could modern periodic table remove various anomallies of mendeleev...

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  20. The following tables shows the position of six elements A, B, C, D, E ...

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