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What were the early attempts to classify...

What were the early attempts to classify the elements ?

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Knowledge Check

  • The first attempt to classify elements was made by

    A
    Mendeleev
    B
    Lothar Meyer
    C
    Newlands
    D
    Doberelner

  • The first attempt to classify elements was made by:

    A
    Mendeleev
    B
    Lothar Meyer
    C
    Newlands
    D
    Dobereiner

  • The first attempt to classify elements was made by -

    A
    Mendeleev
    B
    Newland
    C
    Lother-mayer
    D
    Dobereiner
    • BHARATI BHAWAN (ENGLISH)-PERIODIC CLASSIFICATION OF ELEMENTS -LONG - ANSWER QUESTIONS
    1. What were the early attempts to classify the elements ?

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    2. What is the significance of the blank spaces in Mendeleev's periodic t...

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    3. What is meant by the statement , 'Properties of elements are a periodi...

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    4. Why is the atomic number of an element more important than its atomic ...

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    5. Define the following : (a) group (b) period , (c) , representative ...

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    6. State how atomic size varies from left to right in a period and from t...

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    7. What is the basic difference between Mendeleev's periodic table been o...

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    8. How have the shortcomings of Mendeleev's periodic table been overcome ...

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    9. Describe briefly Mendeleev's periodic table along with its merits.

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    10. Write the electronic structures of the atoms of (a) potassium (b) lith...

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    11. What is the difference between valence electrons and valency of an ele...

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    12. Sodium and aluminium have atomic numbers 11 and 13 respectively. They ...

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    13. The atomic number of an element X is 17. Predict (a) its valency, (b) ...

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    14. Two elements X and Y belong to groups 1 and 2 respectively in the same...

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    15. Define periodic law. Why was it necessary to changes the basis of clas...

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    16. Explain the terms atomic radius, ionization energy and electron affini...

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