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Answer the following questions: In Dob...

Answer the following questions:
In Dobereiner's triad containing Li,Na,K if atomic masses of lithium and potassium are 6.9 and 39.1, then what will be the atomic mass of sodium ?

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NAVNEET PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-EXERCISE
  1. Answer the following questions: Give suitable illustration of Doberei...

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  2. Answer the following questions: Identify Dobereiner's triads from the...

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  3. Answer the following questions: In Dobereiner's triad containing Li,...

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  4. Answer the following questions: State the limitations of Dobereiner,...

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  5. Answer the following questions: state Newlands' law of octaves..

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  6. Answer the following questions: Illustrate Newlands' law of octaves ...

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  7. Answer the following questions: Explain the limitations of Newlands'...

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

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  9. What is Mendeleev's Periodic law?

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  10. State the merits of Mendeleev's periodic table.

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  11. What are the demerits of Mendeleev's periodic table?

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  12. Answer the following questions: Write the molecular formulae of oxid...

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  13. Answer the following questions: Write the molecular formulae of the c...

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  14. Answer the following questions: Write a short note on : Moseley's con...

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  15. Answer the following questions: State the modern periodic law.

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  16. Answer the following questions: What is meant by modern periodic tabl...

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  17. Answer the following questions: Describe the structure of the modern ...

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  18. Answer the following questions: Describe the structure of the modern ...

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  19. Write the answers of the question with refernce to the structure of th...

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  20. Write the answers of the question with reference to the structure of t...

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