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Newlands proposed the law of octaves ....

Newlands proposed the law of octaves . Mendeleeff suggested eight groups for elements in his table . How do you explain these observations in terms of modern periodic classification ?

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How do you appreciate the role of electronic configuration of the atoms of elements in periodic classification ?

How do you appreciate Dobereiner for his efferts in the classification of elements ?

How does atomic radius vary in a period and in a group? How do you explain the variation.

How does atomic radius vary in a period and in a group? How do you explain the variation?

Do you know why Newlands proposed the law of octaves ? Explain your answer in terms of the modern structure of the atom .

(i) Newlands proposed the law of octaves. ii) The law of octaves was not valid for elements that had atomic masses higher than calcium. iii) Newlands left blanks for new elements in his periodic table. Which statement is wrong?

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Without knowning the electronic configurations of the above of the atoms of elements Mendeleeff still Could arrange the elements nearly close to the arrangements in the modern periodic table . How can you appreciate this ?

VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE
  1. Ionization Fotential curve is the group of atomic number versus...

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  2. Ionization potential curve is the graph of atomic number versus ioniza...

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  3. Newlands proposed the law of octaves . Mendeleeff suggested eight ...

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  4. Why was the basis is classificatons of elements changed from t...

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  5. Why was the basis is classificatons of elements changed from t...

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  6. What is a periodic property? How the following properties vary in a gr...

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  7. Elments in a group generally possess similar properties , but e...

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  8. Elments in a group generally possess similar properties , but e...

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  9. Name two elements that you would expect to have chemical prope...

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  10. What is a group?

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  11. What is a period in modern periodic table ?

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  12. Mendeleev's eka-aluminium is

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  13. Which one of the following elements has more electropositivity ?

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  14. Number of vertical columns in the modern periodic table are (As per IU...

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  15. A Dobereiners Triad in the following, is ........................

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  16. Which one of the following belongs to the group of atomic weights of D...

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  17. 11, 12, 13 and 14 are the atomic numbers of the elements Na, Mg, Al an...

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  18. The most electronegative element is

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  19. Raju : All the known elements at the time of Dobereiner. could not be ...

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  20. (i) Newlands proposed the law of octaves. ii) The law of octaves was ...

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