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What is the basic difference in approach between the Mendeleevs Periodic Law and the Modern Periodic Law?

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V PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
  1. What is the basic theme of organization in the periodic table?

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  2. Which important property did Mendeleev use to classify the elements in...

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  3. What is the basic difference in approach between the Mendeleevs Period...

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  4. On the basis of quantum numbers justify that the sixth period table sh...

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  5. In terms of period and groups where would you locate the element with ...

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  6. Write the atomic number of the element in the third period and group 1...

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  7. Which element do you think would have been named by Lawrence Berkele...

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  8. Why do elements in the same group have similar properties ?

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  9. What does atomic radius and ionic radius really mean to you?

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  10. What does atomic radius and ionic radius really mean to you?

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  11. What do you understand by isoelectronic species?Name a species that wi...

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  12. N^(3-),O^(2-),F^-,Na^+, Mg^(2+),Al^(3+) what is comman in them ?

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  13. A graph of aromic radius versus atomic number is given blow: Account f...

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  14. What is the significance of the terms - isolated gaseous atom and grou...

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  15. Energy of an electron in the ground state of hydrogen atom is -2.18 xx...

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  16. Among the second period elements the actual ionisation enthaply are in...

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  17. How would you explain that the first ionisation energy of Na is lawer ...

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  18. What are the main factors due to which the ionisation enthalpy of the ...

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  19. The first IE (Kj mol^(-1))of group 13 elements are B/801 Al/577 Ga...

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  20. Which of the following pairs would have more negative electron gain en...

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