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The calculated electron gain enthaly ...

The calculated electron gain enthaly values for alkaline earth metals and noble gases are positive . How can you explain this ?

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Explore conceptually related problems

How does the electron gain enthalpy values vary in a group and a period ?

Why Noble gases have zero electron gain enthalpy?

How beryllium differs from the other alkaline earth metals .

How does alkaline earth metals react with (a) water and (b) air .

Knowing the electron gain enthalpy values for O to O^(-) and O to O^(2-) as -141 and "702 kJ mol"^(-1) respectively, how can you account for the formation of a large number of oxides having O^(2-) species and not O^(-) ?

Which metals are more reactive and which are less reactive ? How can you say ?

In alkaline earth metals, the electrons are more firmly held to the nucleus and hence

For a element, the value of electron gain enthalpy is positive. Which type of element it may be ? What this value is positive ?

(A): Electron gain enthalpy of noble gases is very less (R): Atoms of noble gases have completely filled orbitals

VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE
  1. What is your understanding about Ea (2 ) O(3 ) , EsO(2) ?

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

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

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

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

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

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

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

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  9. What is atomic number ?

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

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

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

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

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

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  15. Which one in each of the following pairs is larger in size? S^(2-),Cl^...

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  16. Which one in each of the following pairs is larger in size ? ...

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  17. Which one in each of the following pairs is larger in size? C^(4-),F^(...

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  18. Which one between Na and Na^(+) would have more size ?

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  19. Which one between Cl and Cl^(-) would have more size ? Why ?

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  20. A and B are two elements . The compound formed with A and B is...

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