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The densities of calcium (ca ) and b...

The densities of calcium (ca ) and barium (Ba ) are 1.55 and 3.51 g `cm ^(-3) ` respectively based on Dobereiner's law of triads , can you give the approximate density of strotium (Sr ) ?

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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE
  1. How can you explain Aluminium (Al) is a metalloid with chemical equati...

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  2. What relation about elements did dobereiner want to establish ?

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  3. The densities of calcium (ca ) and barium (Ba ) are 1.55 and 3.5...

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  4. All akali metals are solids but hydrogen is a gas with diatomic...

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  5. IF lanthanides and actinides are inserted within the table . Im...

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  6. Do you know why Newlands proposed the law of octaves ? Explain...

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  7. Why did Mendeleeff had to leave certain blank spaces in his per...

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  8. What is your understanding about Ea (2 ) O(3 ) , EsO(2) ?

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  9. Second ionization energy of an element is higher than its firs...

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  10. The calculated electron gain enthaly values for alkaline earth m...

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  11. Do you think Newland's law of octaves is correct ? Justify .

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  12. Why are lanthanides and actinides placed separately at the bot...

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  13. The second period element , for example , for example 'F' has ...

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  14. Observe the following table and Fill it . Observations ...

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  15. Observe the following table and Fill it . Observations ...

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  16. What is atomic number ?

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  17. Consider the following elements of third period of modern periodic ta...

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  18. How does the valency vary on going down a group ?

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  19. DO the atom of an element and its ion have same size ?

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  20. Imagine , which one in each of the following pairs is large in...

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