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What is the basic theme of organisation ...

What is the basic theme of organisation in the periodic table?

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Basic theme of orgnisation in periodic table is to study different physical and chemical properties of all the elements and their compounds is a simple and systematic manner. Elements belonging to same group have similar physical and chemical properties. so, if physical and chemical property of any one element of a group is known, then it is possible to predict the physical and chemical properties of the remaining elements of that group. therefore it is not important to keep in mind the physical and chemical properties of all elements in the periodic table.
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CHHAYA PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-SOLVED NCERT EXERCISE
  1. What is the basic theme of organisation in the periodic table?

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  2. Which property did Medeleev use to classify the elements in his period...

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  3. What is the basic difference in approach between mendeleev's periodic ...

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

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

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  6. Write atomic number of the element present in the third period & seven...

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  7. Which element do you think would have been names by-Lawrence Berkely L...

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  8. Why do elements in the same group have similar physical and hemical pr...

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

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  10. What do atomic radius vary in a peiod and ini a group? How do you expl...

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  11. What do you mean by isoelectronic species? Name species that will be i...

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  12. Consider the given species: N^(3-),O^(2-),F^(-),Na^(+),Mg^(2+) and Al^...

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  13. Explain why cations are smaller and anions larger in radii than their ...

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  14. What is the significance of the terms-'Isolated gaseous atom' and 'gro...

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  15. Enegy of an electron in the ground state of the H. atom is -2.18xx10^(...

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  16. Among the second period elements the actual ionisation enthalpies are ...

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  17. How would you explain the fact that the first ionisation enthalpy of s...

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

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  19. First ionisation enthalpy values (in kJ mol^(-1)) of group-13 elements...

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  20. Which of the given pairs would have a more negative electron-gain enth...

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