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On what basis is potassium (Z=19) placed...

On what basis is potassium (Z=19) placed in `4^th` period and group 1?

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CHETANA PUBLICATION-Periodic Classifications of ELements-EXAMPLE
  1. what are periodic properties?

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  2. What are normal elements?

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  3. On what basis is potassium (Z=19) placed in 4^th period and group 1?

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  4. How will you differentiate between metals and non-metals by the number...

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  5. What are types of matter?

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  6. What are the types of elements ?

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  7. What are the smallest paritcles of matter called?

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  8. What is the difference between the molecules of elements and compounds...

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  9. What are thevalues of 'n' for the shells K,L and M?

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  10. What is the maximum number of electrons that can be accommodated in a ...

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  11. Write a short note on: Mendeleev's periodic law

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  12. Deduce the maximum electron capacity of the shells K, L and M?

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  13. Write a short note on: Structure of the Modern periodic table

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  14. Write a short note on: Position of isotpes in the Mendeleev's and t...

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  15. Write a short note on: Halogens or group 17 elements

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  16. Write a short note on: Transition elements.

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  17. Write a short note on: Inner Transition elements

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  18. Write a short note on: Metallic and Non-metallic properties

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  19. Distinguish between: Mendeleev's periodic table and Modern periodic ...

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  20. Distinguish between: Transition elements and Inner transition eleme...

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