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In what manner is the long form of peri...

In what manner is the long form of periodic table better than Mendeleef's periodic table? Explain with examples.

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ICSE-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-REVIEW EXERCISES
  1. Which of the following pairs of elements were found anomalous in Mende...

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  2. Why was the basis of classification of elements changed from atomic ma...

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  3. In what manner is the long form of periodic table better than Mendele...

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  4. Write the electronic configuration of the following elements and predi...

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  5. Write the electronic configuration of the following elements and predi...

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  6. Write the electronic configuration of the following elements and predi...

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  7. Write the electronic configuration of the following elements and predi...

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  8. Write the electronic configuration of the following elements and predi...

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  9. Classify the following elements into the types and the blocks to which...

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  10. Which of the following radii of an atom is the smallest and why? Cov...

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  11. Which of the following pairs are isoelectronic ? Na, Mg

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  12. Which of the following pairs are isoelectronic ? F^(-),O^(2-)

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  13. Which of the following pairs are isoelectronic ? K^(+),Sc^(3+)

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  14. The ionisation energy of H is 1312 kJ mol^(- 1). How much energy is re...

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  15. It requires 2.378xx10^(7)J energy to ionise a certain amount of helium...

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  16. Which element in each of the following pairs would you expect to have ...

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  17. Which element in each of the following pairs would you expect to have ...

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  18. Which element in each of the following pairs would you expect to have ...

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  19. A, B, C and D are four elements with atomic numbers Z - 1, Z, Z + 1 an...

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  20. A, B, C and D are four elements with atomic numbers Z - 1, Z, Z + 1 an...

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